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WATCH ABOVE: The disposable respirator is a simple abundant device—a cheap, accessible to use affectation advised to accumulate dust out of the lungs. But over the years, critics of that simple respirator accept aloft austere questions. They say some masks didn’t go far abundant to assure workers adjoin baleful dust, like asbestos. Now, some nurses who are afraid they’ll appear into acquaintance with Ea are additionally allurement the government boxy questions and apprehensive if the affectation they’ll abrasion will assure them.

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“The 8710, that was a advantage we anticipation that was absolutely the hot set up.”

Michael Leslie formed in a moulded fibreglass branch in the backward 1960s and 70s.

The 8710, a disposable respirator fabricated by 3M, was accustomed for use adjoin baleful dusts, including silica, atramentous and asbestos. 3M advertised it would advice assure workers from anatomic hazards like Black Lung and Asbestosis. The affectation would go on to be a big agent in the disposable respirator bazaar and eventually advertise millions.

Leslie says the 8710 was accustomed out by his employer at his Portland Oregon factory. “We anticipation that was activity to be bigger than anything,” Leslie says.

Leslie says he wore the affectation in 1972 for about a year about dusts that included asbestos. He says it leaked.

WATCH BELOW: Michael Leslie wore a disposable respirator that the US government accustomed as able aegis adjoin asbestos. He now has a baleful anatomy of lung blight and says the respirators didn’t assignment – a affirmation the respirator’s architect denies. He says the government should accept done a bigger job acclimation asbestos.

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“If you wore a affectation actual connected it was on central and outside. You could see it, aloof little diminutive particles…The alfresco a lot.”

But, over a thousand afar south of Leslie’s factory, respirator experts had concerns.

“We would altercate how abominably they leaked… we did not appetite to acquiesce the 8710 or any added distinct use respirator for that bulk to be accessible at the Laboratory,” says Darell Bevis, a respirator able who formed at the Los Alamos Scientific Laboratory in New Mexico beneath his bang-up Ed Hyatt. The lab activated masks acclimated for aegis adjoin alarming and sometimes radioactive material.

In 1970, Hyatt told 3M their respirators “should accept at atomic two sizes, our present one and a abate one, if we achievement to fit the majority of workers.” Hyatt capital to accomplish abiding all workers had respirators that cautiously fit them. For him the allowances of added affectation sizes were obvious. In 1976, Hyatt additionally wrote a address to the government adage added testing would charge to be done, “before it is accustomed that alone one admeasurement of respirator is satisfactory.”

But the 8710 anesthetized all the tests and would be accustomed by the U.S. government’s National Institute for Anatomic Assurance and Bloom (NIOSH) in 1972.

Darell Bevis and added assemblage accept criticized the testing requirements in abode at the time. Darell Bevis has additionally formed as an able attestant on account of plaintiffs suing 3M. “Our approval standards are actual bad and all regulations are complete minimum requirements.”

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16×9 asked 3M for an on camera account but the aggregation declined, and instead provided a accounting statement. It acicular to “extensive” government abstracts that says masks, like the 8710, fit and assignment well. Since its approval, studies accept apparent the “respirator finer protects workers from abounding aerial contaminants, including asbestos.” One U.S. government bureau that advised the abstracts “rejected assertions that 3M 8710 respirators, and analogously advised respirators fabricated by others, do not clarify finer or cannot be fabricated to fit workers.” 3M has additionally said its tests went able-bodied above what the government adapted and that analysis shows the 8710 provided a acceptable fit if users followed instructions.

In fact, U.S. government regulators accept connected said the 8710 provides bigger aegis than experts, like Bevis, argue.

But asbestos is actual alarming – and aloof a baby bulk of acknowledgment can be deadly.

By 1980, NIOSH did apperceive how baleful asbestos absolutely was and was “deeply concerned” about the use of some respirators adjoin baleful substances including asbestos.

“Asbestos irritates the beef in some way we don’t apperceive absolutely how… [it] gets into the DNA… the basis which controls corpuscle advance and they lose ascendancy over the advance of the cells… that is the analogue of cancer,” says Dr. David Egilman, an able in asbestos-related disease.

NIOSH afflicted its beforehand position now cogent 3M, “It is not our position that single-use dust respirators will accommodate able aegis adjoin the blight causing abeyant of asbestos.”

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But NIOSH said it couldn’t abandoned the approval of the respirator adjoin asbestos afterwards “following adapted authoritative procedures” so, instead, alleged for added abstraction and abstracts from the manufacturers.

“What 3M was told was, this is alarming to use this affectation with bodies who are apparent to asbestos,” Egilman, who has testified on account of plaintiffs adjoin 3M and advised some of 3M’s centralized documents, says.

“They didn’t booty abroad the allowance of approval. And what did 3M do? They connected to bazaar it… for asbestos.”

Egilman has been criticized in the accomplished for actuality a accessible bloom crusader and courts accept not accustomed his affidavit in every case he has testified in.

But in 1986, the U.S. government did affair added acrimonious regulations that finer put an end to the use of disposable respirators, like the 8710, for use adjoin asbestos.

“Ultimately, the distinct use respirator was activity to aperture far greater than they capital any respirator acclimated for aegis adjoin carcinogens,” says Darell Bevis.

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But, while in the U.S laws were accepting stricter and 3M was no best affairs the affectation for asbestos, one 3M official accepted that in 1999 the aggregation was still affairs the 8710 in Canada as able adjoin asbestos – about fifteen years afterwards it chock-full accomplishing so in the U.S.

The 8710 is no best awash in the U.S. and Canada. But, admitting that, the 8710 is still awash for use adjoin asbestos in India “for use adjoin mechanically generated particulates including silica and asbestos.”

“From a bloom and assurance angle they shouldn’t be accomplishing that. From a moral angle they shouldn’t be accomplishing that. From an ethical angle they shouldn’t be accomplishing that,” Dr. David Egilman says.

3M told 16×9 anniversary country establishes its “own assurance and bloom regulations” and the respirators accommodate able aegis for asbestos and accommodated “the accomplished authoritative requirements of anniversary nation area they are sold.” 3M additionally said that the respirators awash today are “not necessarily identical to the 8710 respirators that were awash ahead in the United States.”

For Michael Leslie, all the aback and alternating that happened in the 1980s doesn’t bulk much. “When I anticipate aback on it I think, ‘geez I ambition I….I ambition I had had article else’,” Leslie says about the 8710 respirators he says he wore. He has been diagnosed with mesothelioma, one of the deadliest forms of cancer. A blight he thinks could accept been prevented with a bigger mask.

Leslie sued several companies, including 3M, adage the affectation didn’t assure him. In cloister documents, 3M said that Leslie’s employer “did not accede with accompaniment or federal rules for attention employees.” 3M additionally argued that Leslie’s employer was amenable for abode training and safety, and authoritative abiding masks fit workers and that there was no affirmation that his employer abstinent the akin of asbestos in the air, important for allotment the adapted respirator.

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In cloister documents, 3M additionally denied that its affectation could be abhorrent adage that Mr. Leslie was apparent to asbestos for over a decade afterwards any respirator and he may not accept beat the 8710 at all while alive with asbestos in the plant.

Nothing was accurate in cloister because the case was settled.

3M told us that it has prevailed at balloon in every case. Courts, 3M says, accept alone arguments that the 8710 did not fit or clarify effectively. Workers “wearing a respirator and after acceptable ill does not necessarily prove the account of illness.”

Instead, 3M says, workers may “become ill because they did not consistently abrasion respiratory aegis back needed. Administration can additionally accord to artisan affliction to the admeasurement they abort to adviser the air and baddest the adapted respiratory aegis for the contaminant in the air.” 3M additionally says that administration may not accept activated consistently to ensure that respirators fit on people’s faces or “train [employees] in able respirator usage.”

One 3M official has additionally testified that the 8710 itself came in one admeasurement but the aggregation did advertise “other sizes – they aloof weren’t alleged 8710.”

3M has never absent a case at balloon or accepted wrongdoing. But according to 3M banking reports, the aggregation has paid out over $150 actor in the aftermost four years mostly on “respirator mask” action “fees and settlements”.

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“They achieve cases area they anticipate they’re activity to lose,” says Dr. Egilman.

“I’ve been an able in cases, area in my appearance their respirators bootless to assure bodies and bodies got sick.”

16×9’s “The Respirator” affectedness this Saturday at 7pm.

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