'Screw Bolt' mining rock bolt

Gray, Peter, BHP Engineering Pty Ltd

You are viewing the version of work from June 19, 2012, 11:45 a.m. (moderator approved).
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Title
'Screw Bolt' mining rock bolt
Description

96/383/1

Website
http://from.ph/153209

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Date modified June 19, 2012, 11:45 a.m. May 15, 2012, 12:40 p.m.