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California type portable switches shall be planked between rails or other effective means shall be utilized to prevent workers from falling or tripping in openings.
NOTE: Authority cited: Sections 142.3 and 7997, Labor Code. Reference: Sections 142.3 and 7997, Labor Code.
1. Amendment of section and new Note filed 3-5-96; operative 4-4-96 (Register 96, No. 10).
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