Occupational, Interior, Factory ‘A’ (metal works facility), Production Hall ‘D’, general work activity, moving metal parts, grinding in adjacent hall, faint radio playing, worker whistling, ventilation noise. Industry, industrial, machinery, ZM-1-3E

Occupational, Interior, Factory ‘A’ (metal works facility), Production Hall ‘D’, general work activity, moving metal parts, grinding in adjacent hall, faint radio playing, worker whistling, ventilation noise. Industry, industrial, machinery, ZM-1-3E