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Validation and Extension of Visibility Requirements Analysis for Underground Mining Equipment.

Authors
Sanders-MS; Krohn-GS
Source
NTIS: PB/83-252957 :65 pages
Link
NIOSHTIC No.
10003076
Abstract
Six underground coal mine shuttle cars were used to assess visibility using visual attention locations (val) and an improved human eye reference measurement instrument (hermi mark II). Each machine was assessed in the inby and outby directions of travel without a canopy and with a canopy in its highest and lowest positions, enabling the illumination level at each val to be determined. The results showed that operator eye position was the most important variable determining visibility. When this variable is controlled, the addition of a canopy has no effect on visibility. Further, with the eye position controlled, there is no difference between high and low seam machines. The assessments showed blind spots on the opposite side of the car from the operator and ahead of the machine. The report includes suggestions to reduce the blind spots and a procedures manual for using hermi mark II and the system of val to assess visibility from underground mining equipment.
Publication Date
19830101
Document Type
CP; Final Contract Report;
Fiscal Year
1983
NTIS Accession No.
PB83-252957
NTIS Price
A05
Identifying No.
OFR 154-83
NIOSH Division
PRC;
Source Name
NTIS: PB/83-252957
Performing Organization
Canyon Research Group Inc.
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