Authors: Ruff, T.M.; Holden, T.P.
Source: Journal of Safety Research, Volume 34, Number 2, April 2003, pp. 175-181(7)
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Global positioning system;
Proximity warning system;
Document Type: Research Article
Spokane Research Laboratory, National Institute for Occupational Safety and Health, 315 East Montgometry Avenue, 99207, Spokane, WA, USA
Publication date: April 1, 2003