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Subchapter 7. General Industry Safety Orders
Group 18. Explosives and Pyrotechnics
Article 120. Mixing Blasting Agents

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§5341. Mixing of Blasting Agents--Location.

(a) Buildings or other facilities used for mixing blasting agents, including mobile equipment, shall be located in accordance with the Quantity and Distance Table, Section 5252, unless the mobile equipment is in the process of loading blast holes.

(1) Smoking, matches, open flames, spark-producing devices, and firearms shall not be permitted inside of or within 50 feet of any building or facility used for the mixing of blasting agents. The land surrounding the mixing plant shall be kept clear of brush, dried grass, leaves, and other combustible materials for a distance of at least 50 feet.

(b) If ammonium nitrate is stored at a closer distance to blasting agents than recommended by Section 5253, then 1/2 the ammonium nitrate weight shall be added to the quantity of blasting agents to calculate the total quantity involved for the application of the aforementioned table.

(c) Liquid oxidizers shall be stored in a manner to prevent them from contaminating blasting agents or fuels.


Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.


1. Amendment of subsections (b) and (c) filed 10-17-75; effective thirtieth day thereafter (Register 75, No. 42).

2. Amendment filed 7-16-76; effective thirtieth day thereafter (Register 76, No. 29).

3. Amendment of subsection (c) filed 11-18-76; effective thirtieth day thereafter (Register 76, No. 47).

4. Amendment of section and new Note filed 7-11-2003; operative 8-10-2003 (Register 2003, No. 28).

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