| # | Regulations |
|---|---|
| 1 | Explosives and blasting agents. |
| # | Letters of Interpretation |
|---|---|
| 1 | - 1910.109(e)(4) - Blasters Circuit Testers. |
| 2 | - 1910.109(e)(4)(vii) - Carbon zinc batteries in blasting galvanometers. |
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