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Telephone Communication System for a Deep-vein Metal Mine.

Authors
Cory-TS
Source
NTIS: PB/83-173021
Link
NIOSHTIC No.
10002723
Abstract
MISSING
Document Type
CP;
NTIS Accession No.
PB83-173021
Identifying No.
OFR 51-83
NIOSH Division
PRC;
Source Name
NTIS: PB/83-173021
Performing Organization
J0100093
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division