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DELILA LAFON. TECHNICIAN AT THE BLACK LUNG LABORATORY AT THE APPALACHIAN REGIONAL HOSPITAL IN BECKLEY WEST... NARA . Scope and content DELILA LAFON TECHNICIAN AT THE BLACK LUNG LABORATORY AT THE APPALACHIAN REGIONAL HOSPITAL IN BECKLEY WEST VIRGINIA OBSERVES MINER BEING TESTED ON TREADMILL SHE IS DRAWING BLOOD SAMPLE WHICH LATER