Practical guidance on mining safety and gas protection for operators.
This authoritative bulletin builds a clear picture of current decisions in mines and mining from late 1912. It emphasizes safety rules, duties of operators, and the critical need to protect workers when gas is present. The focus includes standards for explosion-proof and oil-type switches, along with how these devices are tested, approved, and labeled for use in potentially explosive environments.
- Learn how permissible switches are tested under controlled conditions and what design features inspectors look for.
- Understand the role of caution and approval plates, and how manufacturers must document switch performance and maintenance.
- See how the scope of approval covers specific switch types, ratings, and modifications, plus the process for withdrawing approvals if needed.
- Get a sense of broader mining-safety concerns, including proper guarding of electrical equipment and ensuring safe working environments for miners.
Ideal for readers involved in mining operations, safety compliance, or historical studies of early 20th‑century mine regulation. The book provides practical detail that helped shape safety practices in gas-prone mines of the era.