Columbia subject headings:
Industrial accidents--United States--Statistics.
Industrial safety--United States--Statistics.
Occupational mortality--United States--Statistics.
Harvard subject headings:
Industrial accidents--United States--Statistics.
Industrial safety--United States--Statistics.
Occupational mortality--United States--Statistics.
Princeton subject headings:
Industrial accidents--United States--Statistics.
Industrial safety--United States--Statistics.
Occupational mortality--United States--Statistics.
Statistics.