Columbia subject headings:
Construction workers--Diseases--West Virginia--Gauley Bridge.
Construction workers--Health and hygiene--West Virginia--Gauley Bridge.
Hawks Nest Tunnel (W. Va.)
Quartz fibers--Toxicology--West Virginia--Gauley Bridge.
Silicosis--West Virginia--Gauley Bridge.
Union Carbide Corporation.
Harvard subject headings:
Construction workers--Diseases--West Virginia--Gauley Bridge.
Hawks Nest Tunnel (W. Va.)
Quartz fibers--Toxicology--West Virginia--Gauley Bridge.
Silicosis--West Virginia--Gauley Bridge.
Union Carbide Corporation
Princeton subject headings:
Construction workers--Diseases and hygiene--West Virginia--Gauley Bridge.
Hawks Nest Tunnel (W. Va.)
Quartz fibers--Toxicology--West Virginia--Gauley Bridge.
Silicosis--West Virginia--Gauley Bridge.
Union Carbide Corporation.