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| # | Regulations |
|---|---|
| 1 | - 1926.906 - Initiation of explosive charges - electric blasting. |
| # | Letters of Interpretation |
|---|---|
| 1 | - 1926.906 - Blasters Circuit Testers. |
| 2 | - 1926.906(q) - Carbon zinc batteries in blasting galvanometers. |
| 3 | - 1926.906 - Electric blasting machine. |
