C. quartz-rich rock
The Hawk's Nest Tunnel Tragedy involved unprotected workers who were exposed to silica dust while tunneling through quartz-rich rock, leading to a high incidence of silicosis and other respiratory illnesses.
A. chrysotile asbestos
B. vermiculite
C. quartz-rich rock
D. uranium
1 answer
C. quartz-rich rock
The Hawk's Nest Tunnel Tragedy involved unprotected workers who were exposed to silica dust while tunneling through quartz-rich rock, leading to a high incidence of silicosis and other respiratory illnesses.