| # | Letters of Interpretation |
|---|---|
| 1 | - 1910.1025(e)(1) - Enforcement of the engineering and work practice control provisions of the lead standard, 1910.1025(e)(1). |
| 2 | - 1910.1025(e)(1) - Stay-of-enforcement of lead standard for brass and bronze ingot manufacturing. |
| 3 | - 1910.1025(e)(4)(ii) - Enforcement criteria for lead monitoring requirements of recirculated air. |
| 4 | - 1910.1025(e) - Powered air-purifying helmets are personal protective equipment, not engineering controls. |
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