11 Secrets of Volcanologists

United Nations Photo, Flickr // CC BY-NC-ND 2.0. Image cropped.
United Nations Photo, Flickr // CC BY-NC-ND 2.0. Image cropped.

Around the world, over 600 million people live near one of 1500 active terrestrial volcanoes. Who's keeping them safe from potential future eruptions? The women and men who study these gas-and-ash-and-lava belching windows into the center of the earth: volcanologists.

You might not be sure what volcanologists do or why they matter—especially if you live thousands of miles away from one of these fiery mountains. So, Mental Floss went searching for answers from four volcanologists working in various capacities around the country, who shared their experiences in the field, under the ocean, and gazing far out into space.

1. THEY STUDY EVERYTHING FROM MAGMA COMPOSITION TO VOLCANIC GASSES AND BEYOND.

A volcanologist takes gas emission measurements during an assessment mission inside the crater at Mount Nyamulagira
United Nations Photo, Flickr // CC BY-NC-ND 2.0

"When I tell people what I do, 95 percent of the time they ask, 'What is that?'" says Arianna Soldati of the University of Missouri, who researches lava flows.

Volcanology is the study of how volcanoes form, what they're made of, and what they eject, among other areas of research. Many volcanologists have degrees in geology; some, like Soldati, are physical geologists, collecting samples on site and then analyzing them to figure out their composition. Others are geophysicists who study tectonic plates and their role in volcanic eruptions and earthquakes. Geochemists and petrologists study volcanic gasses and minerals, and geodesists look at deformations on and around volcanoes to figure out if magma is pooling up underneath them. All these disparate disciplines work together, Soldati says, to "understand how the planet works, so we can understand how eruptions work."

2. THEY WORK WITH OTHER VOLCANOLOGISTS AROUND THE GLOBE IN THE NAME OF SAFETY.

Jacob Lowenstern is Chief of the Volcano Disaster Assistance Program at the United States Geological Survey (USGS), a government agency that monitors our country's 169 active land volcanoes, largely via observatories in Hawaii, Alaska, Washington, and Oregon. But it also offers assistance and training to volcanologists in other countries because, as Lowenstern points out, an active volcano system respects no human borders. The program helps keep people and animals safe from the destruction wrought by lava flows, mudslides, and gas: When eruptions happen, localities issue alerts based on data from USGS.

Underwater volcanoes can create shipping hazards, like floating chunks of pumice, but a land-based volcano can create serious chaos worldwide. When Iceland's Eyjafjallajökull erupted in 2010, its miles-high ash cloud grounded aircraft to and from Europe and Britain for about a week. "We didn't even know what concentration of ash it was safe to fly through, because no one had studied it before," Soldati says. (They do know now, although the answer depends on how long the aircraft is aloft [PDF]). Back when Tambora erupted in Indonesia in 1815, it kicked off the Year Without a Summer, as ash circled the globe and blocked out the Sun, resulting in crop failures, famine, and a total of 100,000 human deaths. "At some point, something truly global [like that] is going to happen again," Lowenstern says. Volcanologists aim to be prepared.

3. SOME OF THEM WORK UNDERWATER ...

An estimated 80 percent of eruptions happen beneath the oceans' waves. It hasn't been easy for volcanologists to research them—for starters, there was no comprehensive map of the ocean floor until just a few years ago. And not being able to see a volcano that's 3000 feet underwater makes observation … challenging. Historically, scientists mostly monitored underwater volcano activity using fickle, battery-operated equipment installed on the seafloor, which could only store (rather than transmit) data. The first complete footage of an underwater eruption wasn't captured till 2009.

William Wilcock says technology has finally caught up to the thirst for information. He studies the Pacific Ocean's Axial Seamount—the most active volcano in the Northeast Pacific—via the Cabled Array ocean observatory, 550 miles of fiber-optic cable equipped with sensors that allow scientists to to monitor the Juan de Fuca ridge off of Oregon's coast. Using the array, they can monitor the chemicals and temperature in the water column, measure the volcano's magma chamber, and keep tabs on earthquakes, which could signify an eruption.

The array sends underwater volcanologists data in real time—fast enough that they can sometimes deploy autonomous vehicles for a closer look at eruptions as they happen. In April 2015, the project's team was able to witness an entire eruption of Axial Seamount from start to finish, leading to “the most detailed observations ever made” of an undersea volcano, as Wilcock told The Washington Post. The data they gleaned helped them understand how the seamount's caldera falls during eruptions and then reinflates with gases and magma before reaching a particular threshold, at which it erupts. Understanding how that inflation works is important for land volcanoes too, which is part of why data from the array is posted on the internet for scientists around the world to use.

4. ... AND SOME STUDY VOLCANOES IN SPACE.

The cloud-covered Mayon volcano spews ash as it erupts near the Philippines
ROMEO GACAD/AFP/Getty Images

The only scientist NASA sent to the moon was geologist Harrison “Jack” Schmitt, who flew on Apollo 17. (All of the other astronauts were military men-turned-NASA test pilots.) Schmitt—who was actually allergic to regolith, a.k.a. moon dust—helped prove that the moon was once volcanically active. This fact makes NASA's Alex Sehlke incredibly proud—and envious. He's a volcanologist who conducts research in Idaho's Craters of the Moon National Monument in preparation for the agency's planned return there in a few years. Craters of the Moon is geologically similar to our actual moon, in part because it was formed by lava erupting from the middle of the continent, not a juncture where two plates meet; moon volcanos were likely formed in a similar fashion, since the moon is covered, basically, by a single giant plate.

Volcanologists like Sehlke usually play supporting roles in space exploration. They test equipment and speculate about how, say, Craters of the Moon's lava tubes are like those under the surface of the actual moon and might make for a good base of operations. "Imagine looking at the surface of the moon [from Earth] when you're planning a mission and saying, ‘Hmm, looks alright,'" Sehlke says. "But there are questions we need to answer before we go—maybe the terrain is treacherous."

They may also offer guidance from mission control to astronauts (often about areas that look like they might be interesting to explore), and analyze data from probes—like the first images of an ice volcano erupting on Saturn's moon Enceladus, captured by the Cassini spacecraft in 2005.

5. SOME OF THEM ARE LOOKING FOR THE BEGINNINGS OF LIFE.

Sulfide chimneys at the Urashima vent site in the Pacific
NOAA Ocean Exploration & Research, Flickr // CC BY-SA 2.0

Hydrothermal vents—openings in the seafloor where water enters, becomes heated, then spurts back out—support a lot of weird microbes that Wilcock says may be similar to the first organisms that ever existed on our planet. Studying them and the conditions that created them may help us understand how to look for life on other planets and moons—one of NASA's primary objectives. But Sehlke and others are also looking for life by scanning data from probes exploring our solar system: "Wherever volcanoes sit, on Enceladus or elsewhere, there is heat or fluids that maybe provide the necessary environment for microorganisms like the ones we know on Earth," Sehlke says. Volcanoes like these "give us the highest chance of finding life" out in space.

6. THEY ALSO WANT TO UNDERSTAND HOW TO SUSTAIN THE LIFE WE ALREADY HAVE.

While volcanoes created Earth's original atmosphere by emitting the carbon dioxide and nitrogen necessary for life, other volcanic gasses, like sulfur dioxide, increase the ability of our current atmosphere to retain heat [PDF]. "Learning how these things balance out is hugely important to understanding our future" on the planet, Soldati says. That's why new studies are looking at the links between volcanic activity and climate change, and how they may exacerbate each other.

Some volcanologists are particularly concerned about Iceland, where melting ice caps may be releasing pressure on magma chambers, contributing to more—and more explosive—volcanic eruptions in the future. The effect of the reduced pressure is similar to how “the cork of a champagne bottle flies into the air when it has loosened sufficiently,” geophysicist Magnus Guðmundsson told Hakai magazine. Another new study urged those making models of our climate future to include volcanic eruptions as a variable, which they find are under-sampled in such models but can have big effects on temperatures, sea levels, global radiation, and ocean circulation, among other key elements of the climate.

7. THEY GET TO USE A LOT OF COOL EQUIPMENT ...

A volcanologist examines seismic charts
Ulet Ifansasti, Getty Images

Volcanologists use a lot of very high-tech equipment in their line of work. Seismometers measure earthquakes on volcanic slopes. Infrared cameras measure the heat of lava flows. Correlation spectrometers measure the amount of sulfur dioxide in the air, which is released when magma is rising to the surface (and so can signal when a volcano might be ready to erupt). Tiltmeters measure, literally, the tilt of the land around a volcano. If instruments like these, having been mounted on a volcano, fall apart during an eruption, "we sometimes use helicopter drops to put new equipment on the ground," Lowenstern says. More and more, though, volcanologists monitoring land volcanoes rely on equipment mounted on aerial or space-based unmanned craft, "so we don't put people in harm's way." This includes technology called InSAR (Interferometric Synthetic Aperture Radar), which, from a satellite in space, can measure a volcano stretching and contracting. That helps scientists keep tabs on just what the magma inside a volcano is doing—and whether it's about to come up.

8. ... BUT ONE OF A VOLCANOLOGIST'S MOST IMPORTANT TOOLS IS A ROCK HAMMER.

Out in the field, Soldati says, her most important tools are her notebook, for jotting observations, and her steel rock hammer, which she uses both to chip away at rock and to gather samples of molten lava. To grab a sample, she swings into the lava with the pointed end of the hammer, then drops the molten material—which is around 2000°F—into a pail of water; quickly cooling the lava in this way turns it to glass (slow cool it, and it becomes rock), which she transports back to the lab.

Once there, Soldati relies on machines like a concentric cylinder viscometer, which melts lava samples so she can measure their viscosity—which tells her how explosive a volcano's eruptions are. Less viscous lava trickles out of a volcano, while more viscous, and hence more explosive, lava can blow out the whole side of a mountain, sending burning lava, rocks, and other debris flying.

9. IT DOESN'T LOOK LIKE THE MOVIES.

Volcanologist suit

One thing field volcanologists almost never use: those clichéd silver flame-proof proximity suits. "They're heavy, and since you usually have to walk hours to get to your field site, no one wants to carry all that weight," Soldati says. Besides, "heat is almost never the hazard that matters in the situations in which we work," writes Aaron Curtis, a volcanologist working at NASA's Jet Propulsion Laboratory. (You have a greater chance of "being hit by ballistics, or getting gassed," he notes.) "The reason you see those suits so often is that they look really cool on TV."

So what do they wear? Jessica Ball, a Postdoctoral Fellow at the U.S. Geological Survey, writes that "sturdy boots, hard hats, work gloves, rip-resistant clothing with long sleeves, and sunglasses or safety goggles are pretty standard, and I will add a gas mask if I’m going to be in an area with lots of fumes. Also, sunscreen is always important, because I’m often out in the sun all day."

10. SOME OF THEIR WORK IS DANGEROUS IN UNEXPECTED WAYS.

Lava and flying debris aren’t the only hazards during fieldwork. Tina Neal, a volcanologist with the USGS, has reported that she’s had several encounters with bears while working at Ukinrek Maars in Alaska. She also says, "I think the aircraft work of volcanologists is as dangerous if not more so than the active volcanoes we visit and study." Geologist Christina Heliker has described the most fearful moments during her time on staff at the Hawaiian Volcano Observatory as being those that involved flying in a helicopter over continuously active Pu`u `O`o. Once, while trying to return to camp after mapping lava flows, “It was almost dark, and we were sandwiched between an incandescent field of `a`a [lava] and this thick layer of clouds that were glowing orange from the reflected light of the lava,” she told an interviewer. “I was plenty relieved when the pilot decided to give it up and fly out to somewhere else.”

11. THEY WANT YOU TO KNOW: VOLCANOES AREN'T ALL BAD.

Volcanologists aren't drawn to their work only because of the destructive power of their research subjects. "[Volcanoes] also have a positive impact on our life," Soldati says. She points out that volcanoes fertilize the soil—some of the most productive crops on our planet are grown in mineral-rich volcanic ash. They also create new land; the Hawaiian volcano Kilauea has added 500 acres to the Big Island since 1983. So don't say volcanoes never give back.

17 Behind-the-Scenes Secrets of Bookstores

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iStock

For book lovers, there’s no more magical place than the local bookstore. Endless shelves of stories and characters, all at your eager fingertips. And while most of us have probably spent a significant amount of time wandering the aisles, few of us know what goes on behind the scenes. Here are some insights into the life of a bookstore, gleaned from the people who keep the shelves stocked.

1. EMPLOYEES WANT YOU TO ASK THEM FOR RECOMMENDATIONS.

“A person will say, ‘I have a really strange question, I’m sorry, but can you recommend a book?’” says Phyllis Cohen, owner of Berkeley Books in Paris. “That is the most normal question. It is my favorite question in the world! Give me some clues. I’ll ask them some pointed questions and then I make a pile for them. When they discover it they’re over the moon—it’s like they have a personal shopper in the bookshop.”

2. BUT BOOKSELLERS ARE NOT MIND-READERS.

They want to help you find your book, but they can’t if you don’t know the book’s name, author, or what it was about. This happens all the time, and it drives them crazy. “Customers will say ‘I don’t remember the name or what it was about but it has a blue cover. I think it had this word in the title,’” explains Katie Orphan, manager at The Last Bookstore in Los Angeles. Sometimes the questions are so vague that no amount of Googling will help, and then the customer leaves unhappy.

Even a botched title is better than no hints at all. “One funny thing that happens with customers is they get the titles totally wrong,” says Marissa Rodriguez, who has worked in a bookstore for two years. “High school kids will say ‘I’m looking for ‘How To Kill a Mockingbird’ or ‘Angry Grapes.’”

3. THEY CAN SPOT THE BOOKWORMS FROM A MILE AWAY.

A woman browsing near a sign for half-price paperbacks at a bookstore
iStock

Just browsing? Bookstore workers can tell. “Cookbooks is one of the sections where that happens the most,” Orphan says. “Art books and cookbooks. The people who are going to buy books, I can tell by the way they look at them, touch them, start carrying them around in a stack. I can always tell when people come up who is going to buy a book and who isn’t.”

4. THEY KNOW WHEN YOU’RE “SHOWROOMING.”

In recent years, many brick-and-mortar stores have fallen victim to online outlets like Amazon, which often offer the same books for a lower price. Some customers will browse for books they like, only to buy them later online, and they’re not very sly about it. “They’ll come in and use their phone to take a picture of the cover and barcode and just use the bookstore as the Amazon showroom,” says Keith Edmunds, a former bookstore owner. “It was awful. Seeing people do that was the height of ignorance.”

5. AND WHEN YOU’RE PLAYING THE SYSTEM.

“Some regulars would buy books one or two at a time and then within the two-week return window bring them back and be like, ‘I bought the wrong book,’” said Kat Chin, who worked at The World's Biggest Bookstore in Toronto for five years. “You’d know they read them because you could see the book was a little bit worn or the spine was cracked.”

6. THE GOAL IS TO GET BOOKS IN YOUR HANDS.

A red sign advertising bestsellers at a bookstore
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One trick to get customers to commit to a book is to physically put the book in their hands and have them flip through it. “You can direct them to a part of the store, but that’s only half of selling a book,” Rodriguez says. “It's important to get merchandise in people's hands so they feel there’s already some ownership happening. They say ‘I like the way it looks and feels in my hands and I like the way it smells.’”

7. YOU HAVE TO HUNT FOR THE COFFEE SHOP.

Many bookstores, particularly the bigger ones like Barnes & Noble, have incorporated cafes into their layout. Alex Lifschutz, a London-based architect, told The Economist that putting the coffee shop at the back of the store or, if there are multiple stories, on the top floor, “draws shoppers upwards floor-by-floor, which is bound to encourage people to linger longer and spend more.”

8. THE KIDS SECTION IS STRATEGICALLY LOCATED.

According to Edmunds, the kids books are almost always located at the back of a store. “If the parents want to get a book for the kid they have to go through the whole store,” he says. “They’re hoping the parent will see something they want.”

9. SOMEONE PAID FOR THAT PRIME SHELF REAL ESTATE.

A red sign advertising bestsellers at a bookstore
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In many big-box stores, publishers pay for good placement on “front tables, end caps and window space, in the same way General Mills and Procter and Gamble buy space for their breakfast cereals and dish detergents in the supermarkets,” Andy Ross, a literary agent, told The Book Deal.

10. AUTHORS, BEWARE THE “SOCIOLOGY” SECTION.

No author wants their book tucked away in the “sociology” section, claims veteran publishing insider Alan Rinzler. It’s “a catchall section for ambiguous titles, and the kiss of death for book sales,” he says.

11. BOOK THIEVES LOVE THE BIBLE.

At The World's Biggest Bookstore in Toronto, “the Bible was the number one stolen book of all time,” Chin says.

Other frequently stolen books? Japanese comics (a.k.a. manga), expensive medical books, and Kurt Vonnegut’s work. Chin also says Haruki Murakami books were so frequently stolen that her bookstore had to take them off the shelves, only bringing them out when they were specifically requested.

12. EMPLOYEES HATE WHEN YOU LEAVE BOOKS WHERE THEY DON’T BELONG ...

Long rows of books at a bookstore
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“Neatening up a bookstore is a daunting process,” says Demi Marshall, a bookseller in Austin, Texas. The next time you pluck a book from its designated shelf slot, put it back when you’re done. Otherwise, “it’s like if you go to a clothing store and unfold all the clothes and then put them back on the shelf but don’t fold them,” Chin says.

13. ... AND WHEN YOU TREAT THE STORE LIKE YOUR LIBRARY.

“It’s nice to be able to go in and read maybe a chapter to see if you’re gonna like the book,” Chin says. “But then when you sit and read the whole book and put it back on the shelf, it gets grubby.” You’ll know a bookstore is trying to nudge you out the door if multiple employees drop by to ask if you need any help. “We would quietly pester people,” says Caleb Saenz, who used to work at Barnes & Noble. “I was at my peak passive aggressive phase when I was working at a bookstore.”

14. THE INTERNET HAS ACTUALLY BEEN A GOOD THING.

A brick-and-mortar Amazon bookstore in Seattle
iStock

Before the internet became ubiquitous, the process of looking up a book for a customer was daunting. “We had to look it up in 'Books In Print,’ which is a multi-volume, 4-inch thick, hardcover book,” says Liz Prouty, who owns Second Looks Books in Maryland with her husband, Richard Due. “It was a slow and cumbersome process and if anything was indexed wrong or a customer had the first word of a title wrong, you were out of luck.”

15. IT’S ALSO MADE US LOVE BOOKS MORE.

Some thought the e-book would surely spell the death of the bookstore. But many independent sellers say digitization has actually made people crave physical books more. “I’ve noticed in the last couple of years, so many people come in waxing rhapsodic about the smell of books, the feel of books,” Prouty says. “And they say it more now because the alternatives exist. People are deeply attached to the old-fashioned books.”

16. SOME BOOKSELLERS CAN IDENTIFY BOOKS BY THEIR SMELL.

Especially used booksellers. “These Penguins have their own particular odor,” Cohen says. That odor? Vanilla. Others might smell like almond or coffee.

17. BOOKSELLERS AREN’T IN IT FOR THE MONEY.

A blue sign with white letters spelling out the word "books" and a hand pointing
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In fact, most of them have second jobs or need monetary support from family members. “It is definitely a work of passion for everyone that I know,” Marshall says. “We don’t do it for the money, we don’t do it because we have any power or prestige. It’s genuinely just that we love books and we love getting them into people's hands.”

A version of this story first ran in 2016.

13 Secrets of Crime Scene Cleaners

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iStock

It’s a profession that few people realize exists—until tragedy strikes, and suddenly they have to deal with the unimaginable. That’s when they call a select group of iron-stomached, steel-nerved workers known as trauma scene restoration specialists, biohazard remediation technicians, or simply crime scene cleaners.

Until a few decades ago, the task of cleaning up after a loved one died fell to family and friends, potentially adding trauma on top of an already terrible event. In the 1990s, a small group of companies and entrepreneurs sprang up to tackle the problem, specializing in the removal of blood, fluids, human tissue, and hazardous substances. By 2012 (the last year for which reliable data is available), crime scene cleanup was a $350-million industry in the United States, and included more than 500 companies. Here’s what these hazmat-suited heroes want the world to know about their work.

1. THEY AREN'T LIMITED TO CRIME SCENES.

The phrase crime scene cleanup brings to mind police tape and furrow-browed detectives. In reality, only a fraction of the calls these companies receive—which can come from family members, property managers, hotel owners, or anyone with a dead body on their property—are the result of a major crime. Unattended natural death (i.e., a person who dies alone and isn’t discovered quickly) and suicide are the most common scenarios. Glenn Cox, general manager at Southern Bio-Recovery, which has four locations in the Southeast, says that only about 30 percent of the 60 to 100 death scenes his company handles every year are homicides.

To pay the bills, it's common for companies to supplement with other kinds of biohazard removal, whether that's removing tear gas from a property after it's been used by law enforcement or getting rid of meth labs. Cox says that Southern Bio-Recovery also cleans up hoarding situations and decontaminates homes after viral or bacterial incidents—think MRSA or hepatitis outbreaks.

2. MANY OF THEM ARE EX-MILITARY OR LAW ENFORCEMENT.

Former Marine John Krusenstjerna founded Des Moines-based Iowa CTS Cleaners after serving two tours in Iraq. “Just experiencing things out there left me kind of wondering what happened in these situations back in the United States, who takes care of it,” he tells Mental Floss. Peruse executive bios of many trauma restoration company websites and you’ll find similar military, law enforcement, or paramedic backgrounds. Exposure to death—and the chaos it wreaks on family members—also provides valuable experience in the emotional and physical challenges inherent in cleanup. "Being able to compartmentalize in your mind, to stay focused on the task, to have integrity … all of those are attributes I believe I learned from being a soldier," Cox explains.

3. THEIR TRAINING MIGHT INVOLVE PIG BLOOD.

A bucket of blood
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The certification requirements for crime scene cleaners range from nonexistent to uneven, so most training happens in-house. James Michel, CEO at Bio Recovery—which has 22 branches around the country—says all of his company's employees are taken to a special training facility at their headquarters in New York state. "We stage crime scenes there using organic and non-organic types of fake blood: stage blood, pig blood, all different types. We recreate crime scenes with sheet rock, toilets, tile, and [trainees are] able to break it down. We have decontamination stations that are permanently set up so they can walk in and out of and really grasp how to do this on a day-to-day basis." All in all, Michel says, four weeks of such training are required before their techs are even let out on a crime site.

4. THE DEATH SCENE CAN SPREAD BEYOND THE BODY.

“All of our scenes are chaotic, and there's multiple things to do,” says Nate Berg, founder and president of Scene Clean, based in Osseo, Minnesota. “For example, in a decomposition [when a body has been left undiscovered for a long period], you've got strong odors and you've got all their personal property, which now have absorbed the strong odors.” The work becomes a matter of peeling the layers of contamination—bedding and linens, furniture, carpeting, floorboards, subfloor or sheetrock. And what’s visible to the eye (say, a small bloodstain on a carpet) may actually indicate a large pool underneath.

“A bad day is when we get called to a really bad decomposition or unattended death,” Krusenstjerna says, “and find out they’ve not only decomposed in a kitchen or bathroom but it’s dripping into the basement. We had an apartment building where it went from the third floor to the first floor.”

5. THEIR CLEANING SUPPLIES ARE NEXT-LEVEL.

A gloved hand holding a handsaw
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As you might expect, cleaning up the blood, fluids, and tissue left in the wake of a violent death or long-undiscovered decomposition takes more than bleach and elbow grease. The first step is detection of every spot, splatter, or shard. “We use an indicator similar to hydrogen peroxide, but it’s a much, much stronger version,” Cox says. “When it [comes into] contact with bodily fluids, it foams up and turns a very bright white color. It’s also a very strong disinfectant.”

When dealing with brain matter—which tends to harden to a cement-like consistency—Berg prefers to use an enzyme cleaner that, when absorbed by the tissue, softens it just enough to allow it to be removed with a scraper. For stubborn brain tissue, or fluid that’s seeped into the cracks between floorboards, it might be time to break out the demolition tools: crowbars, weighted hammers, circular saws. It’s also not uncommon for techs to have to dismantle furniture, remove sheetrock, or rip up flooring to get at the contaminants that have seeped in or gotten stuck.

6. THEY CAN MITIGATE THE SMELL ... SORT OF.

A person dressed in personal protective equipment
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There’s nothing like the smell of death. And while some techs get used to the odor, “when a body’s been there for 60 days, in moist air, you walk in and breathe that smell, and you just go, ‘This is going to be a long day,’” Michel says. Every technician wears personal protective equipment (a.k.a. PPE; think lined suits, booties, layers of gloves and respirators) to guard against blood- and air-borne pathogens, but it can be hard to avoid a quick waft now and then. “I don’t care how good you are,” Michel says, “when you twist your head in a certain way and break that [respirator] seal, that smell is coming in the mask.” To cope, and to deodorize the home, techs employ HEPA filters, air scrubbers, ozone machines, and hydroxyl generators—which use concentrated UV light to target and destroy pollutants.

7. THEY HATE SEEING CATS ON-SITE.

A longhaired cat caught mid-yawn or snarl
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That's because cats could mean cat pee. “Cat pee is my fricking nemesis,” Berg says. “Most of the time we have to pull up floors or walls and make physical contact with the cat urine because it crystallizes.” Michel agrees: “When you leave a dog by himself and they [defecate] or urinate, you can clean that for the most part. Cat spray is the hardest odor to remove.”

8. THE TURNOVER RATE IS PRETTY HIGH.

Even the toughest clean-up doesn’t compare to the emotional stress of working with grieving families or glimpsing the violence people inflict upon each other. "We only go to the worst of the worst," Michel explains. He's seen professionals in his office and around the industry turn over at a rapid rate. “We’ve had hundreds of employees come in and out of these doors throughout the years and the psychological toll is extremely difficult. Some of the tough cases, where there’s children involved, there’s a somberness in the office for days.” He says that most employees, and even owners, only last about five or 10 years, max.

9. TECHS OFTEN FUNCTION AS COUNSELORS ...

A woman with glasses with her hand on the shoulder of a younger man
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Because everyone deals with grief differently, a crime scene cleanup tech has to be prepared for every kind of human interaction. Usually, it’s the owner or senior tech who deals with loved ones, and that might mean listening to detailed accounts of the deceased or protecting customers from seeing the worst. “Customers tend to want to tell us the whole story, starting two months back,” Cox says. “They need to vent. I have to talk with them, and sometimes I have to give them a hug and let them know that we’re here to help. We understand their situation and let them know that time heals. This is part of the healing process as well.”

10. ... BUT THEY SOMETIMES NEED HELP THEMSELVES.

Experienced techs and owners talk about the importance of separating their work and home lives. Still, not everyone is gifted with the ability to disengage (and even those who can may find the toll adds up over time). Several of the people we spoke to said their companies provide paid counseling for techs on a confidential, request-by-request basis. "All they have to do is submit a request. We take care of everything," Michel notes.

11. THEY MIGHT BLAST THE RADIO—OR WORK AS QUIETLY AS POSSIBLE.

A "quiet please" radio sign
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Techs have to find a way to work amid all that emotion. While on site, that might mean keeping things light among themselves. “We have radios in our truck,” Krusenstjerna says. “We bring the radio in the house, to help break up the time. We’ll talk amongst each other, joking about what we saw on TV the night before or what’s funny on Facebook. But the last thing we want, and where we draw the line, is if the family is in the house. Not to sound like we’re gross or gruesome but we’re not going to say, ‘Grab the tooth off the window ledge,’ because we don’t know if they’re sitting there with their ear to the bedroom door. So we’ll be quiet, and use body language and signs and stuff like that.”

12. A CLEAN-UP CAN COST $10,000.

Based on region, type of cleanup, and number of techs, the cost to customers varies wildly, from around $1000 to over $10,000. Generally, the more dispersed the fluids and tissue in the home, or the longer the decomp, the more manpower it will take and the longer the job will be—leading to higher costs. (While insurance and victim compensation will cover some of the cost, at least part of the bill still falls to the customers.) Depending on the number and type of jobs undertaken, owners of crime scene cleanup companies can clear hundreds of thousands of dollars, if not more, in profit every year. Techs themselves can make anywhere from $25 per hour to over $100 per hour. According to the Bureau of Labor Statistics, the median annual compensation for a hazardous materials removal worker hovers around $41,500, but the top 10 percent earn more than $75,000.

13. THE FACT THAT THEY'RE HELPING PEOPLE MAKES IT WORTHWHILE.

A person in a pink sweater, sitting on a couch, holding the hands of an older person
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If there was a common thread in all the conversations we conducted with crime scene cleaners, it was the immense satisfaction they take from their jobs. Despite the smells, the gore, and the grief, these individuals find great reward in the help they’re able to provide to others in their hour of darkness. “When I have a family member who’s just lost a loved one give me that hug—because they could not have done this for themselves—there is no greater satisfaction in my life,” Michel says. “If I were to die tomorrow, that would be one of the greatest things I've ever been a part of. You can't describe in words. The only way I can say is, it's the beat of another human being's heart against yours, thanking you for helping them on the worst day of their lives."

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