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Study of the Use of Personal Equipment in Low Coal. Experiments on Personal Equipment for Low Seam Coal Miners. Via Comparison Bumping Hazards With High and Low Profile Helmets. Phase II, Report #6.

Sanders MS; Wick D; Krohn GS
NTIS: PB/82-218199 :29 pages
The objective of this study was to determine optimal personal equipment design for use in low coal based on ergonomic, biomechanic, and safety considerations. This report describes an experiment that was conducted to compare the relative bumping hazards of a low- and high-profile hard hat (helmet) in a low seam mining environment. The study was specifically designed to assess the effect of lowering the helmet profile on frequency of head impacts. This involved workers performing four low coal mining tasks wearing the low- and high-profile helmets in a low seam simulator (36- to 48-inch heights). The results indicated that a low-profile helmet could reduce bumping frequency approximately 25 pct, and as much as 80 pct in selected tasks. It was beyond the scope of the study to measure the impact force, thus it was not possible to estimate the effect of the low-profile helmet on severity of impacts underground.
Publication Date
Document Type
CP; Final Contract Report;
Fiscal Year
NTIS Accession No.
NTIS Price
Identifying No.
OFR 39(7)-82
NIOSH Division
Source Name
NTIS: PB/82-218199
Performing Organization
Canyon Research Group, Inc.
Page last reviewed: November 12, 2021
Content source: National Institute for Occupational Safety and Health Education and Information Division