Mining Rules Loosened for Photometer Light Measurement Flexibility
Published Date: 7/1/2025
Proposed Rule
Summary
MSHA wants to update rules about using photometers, the tools that measure light brightness, by removing strict methods. This change gives miners and companies more freedom in how they check light levels without risking safety. The update affects anyone who measures light in mines and aims to keep things safe while making the process easier and more flexible.
Analyzed Economic Effects
2 provisions identified: 2 benefits, 0 costs, 0 mixed.
More Flexibility for Mine Lighting Checks
MSHA proposes to remove required methods for measuring luminous intensity with a photometer in 30 CFR part 75. You (as a miner) may see changes in how lighting is tested in your workplace because miners and companies can use different measurement procedures while MSHA says protection for miners will be maintained.
Less Prescriptive Testing for Mine Operators
MSHA proposes removing specific required methods for using photometers in 30 CFR part 75, giving mine operators and companies more freedom in how they measure lighting. If you run or manage a mining business, this change lets you choose different measurement procedures while MSHA says miner protections remain in place.
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Key Dates
Department and Agencies
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