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Virginia Administrative Code
Title 4. Conservation And Natural Resources
Agency 25. Department of Energy
Chapter 40. Safety and Health Regulations for Mineral Mining
11/23/2024

4VAC25-40-2890. Torque test requirements.

When installing point-anchor rock bolts:

1. A torque test shall be conducted on at least every fourth installed bolt;

2. Torque testing shall be conducted immediately after bolt installation;

3. If the recommended torque has not been achieved, the equipment used to install the bolt shall be adjusted and the next bolt installed shall then be tested; and

4. If the recommended torque has not been achieved on the majority of bolts installed in a working place through equipment adjustment, supplemental support equivalent to longer roof bolts with adequate anchorage, steel or wood sets, or cribs shall be installed.

Statutory Authority

§§ 45.1-161.3 and 45.1-161.294 of the Code of Virginia.

Historical Notes

Derived from VR480-05-1.2 § 15.13, eff. July 19, 1989.

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