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Rock bolting
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ZA8404930B
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Improvements to mine wall and roof bolts
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Supporting mine roof strap
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Threading deformed bars
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FR2530708A1
|
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Anchoring thread with surface impressions
|
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Roller structures
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Production of a rolled thread onto a deformed bar
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Resistance between nut and bolt
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ZA8107747B
|
|
Threading deformed bars
|
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NZ198090A
|
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Rolling thread on deformed bar
|
|
AU7746081A
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Resistance between nut and bolt
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|
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Bar
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Rock bolt assembly
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Rock bolt bearing plate
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Rock bolt
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Rock bolt
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Locating and sealing bearings
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Chemical anthoring rock bolts
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Tunnel lagging
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Rock bolts
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