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Proceedings Paper

A Lighting System For High Speed Photography Of Underground Blasting
Author(s): Frank E. Holden
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Paper Abstract

High speed photography is used to assist research into the fundamentals of blasting in underground gold mining stopes. A suitable lighting system has been developed for use underground. Two or more banks each comprising twenty flash bulbs are positioned within 3 m of the blast. Using a remote flash-sequencer, the flashes are fired with millisecond accuracy. The flash-sequencer is microprocessor-based, is safe and reliable, and offers a wide selection of illumination levels. Illumination levels of 28 x 106 lumen-seconds are easily obtained, and can be exceeded. The lighting system is battery powered, portable, and able to withstand rigorous underground conditions. The system has enabled illumination of over 20 test blasts, and will be used extensively in future underground blasting investigations.

Paper Details

Date Published: 1 September 1987
PDF: 13 pages
Proc. SPIE 0674, 17th Intl Congress on High Speed Photography and Photonics, (1 September 1987); doi: 10.1117/12.975538
Show Author Affiliations
Frank E. Holden, UNISA (South Africa)

Published in SPIE Proceedings Vol. 0674:
17th Intl Congress on High Speed Photography and Photonics
Donald Hollingworth; Maurice W. McDowell, Editor(s)

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