File:Tunnel support chart for rock bolts and shotcrete as a function of RMR.jpg
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![File:Tunnel support chart for rock bolts and shotcrete as a function of RMR.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/6/6f/Tunnel_support_chart_for_rock_bolts_and_shotcrete_as_a_function_of_RMR.jpg/611px-Tunnel_support_chart_for_rock_bolts_and_shotcrete_as_a_function_of_RMR.jpg)
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current | 21:15, 24 July 2014 | ![]() | 1,523 × 1,495 (233 KB) | commons>DonYsabel | User created page with UploadWizard |
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