Mesothelioma Navy Asbestos Exposure in Naval Service 2 — Questions and Answers
Question 1: Which naval occupational specialty carried the highest risk of asbestos exposure due to direct handling of insulation materials?
- Radar technician
- Machinist's mate (Correct answer)
- Yeoman
- Signalman
Correct answer: Machinist's mate
Machinist's mates worked directly with boilers, pipes, and engine components heavily insulated with asbestos-containing materials.
Question 2: What was the primary reason asbestos was used extensively in Navy ships during World War II?
- It was the cheapest available material
- It provided superior fire and heat resistance (Correct answer)
- It was mandated by international maritime law
- It improved ship speed and performance
Correct answer: It provided superior fire and heat resistance
Asbestos was chosen primarily for its exceptional fire-retardant and heat-insulating properties, critical for protecting crew and ships in combat.
Question 3: Navy veterans who served in which decade faced the highest cumulative asbestos exposure risks due to peak shipbuilding with asbestos materials?
- 1920s–1930s
- 1940s–1960s (Correct answer)
- 1970s–1980s
- 1990s–2000s
Correct answer: 1940s–1960s
The 1940s through 1960s represented peak asbestos use in naval shipbuilding, exposing an estimated 4.3 million military personnel.
Question 4: What type of ship compartment posed the greatest secondary asbestos exposure risk to crew members who did not work directly with insulation?
- Officer quarters
- Engine room and fire room (Correct answer)
- Navigation bridge
- Mess hall
Correct answer: Engine room and fire room
Asbestos fibers released in engine and fire rooms circulated through poorly ventilated shipboard air, exposing even crew not directly handling materials.
Question 5: Which U.S. Navy ship type typically contained the most asbestos per vessel due to its complex machinery and weapons systems?
- Patrol boat
- Destroyer
- Aircraft carrier (Correct answer)
- Landing craft
Correct answer: Aircraft carrier
Aircraft carriers contained the greatest quantities of asbestos due to their massive size, extensive machinery, aviation fuel systems, and crew accommodations.
Question 6: How did asbestos removal and repair work on ships create exposure risks that differed from original installation?
- Removal released fewer fibers than installation
- Disturbing aged asbestos released more concentrated fiber clouds (Correct answer)
- Repair work used different, safer asbestos types
- Regulations required full respiratory protection during all repairs
Correct answer: Disturbing aged asbestos released more concentrated fiber clouds
Deteriorated asbestos insulation, when disturbed during repair, releases dense clouds of friable fibers far more dangerous than during original installation.
Question 7: Which Navy rating was specifically responsible for maintaining steam systems and therefore had near-constant asbestos exposure?
- Boatswain's mate
- Damage controlman
- Boilerman (BT) (Correct answer)
- Quartermaster
Correct answer: Boilerman (BT)
Boilermen (later merged into Machinist's Mates) maintained high-pressure steam boilers wrapped in asbestos insulation, creating near-constant fiber exposure.
Mesothelioma Navy Asbestos Exposure in Naval Service 2
Which naval occupational specialty carried the highest risk of asbestos exposure due to direct handling of insulation materials?