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1910.181(a)(25) Mast
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Mast means the upright member of the derrick.
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1910.181(a)(25) Materials Handling and Storage, Mast
Mast means the upright member of the derrick ...
OSHA 1910 General Industry > N Materials Handling and Storage > 1910.181 Derricks > 1910.181(a) Definitions Applicable to This Section > 1910.181(a)(25) Mast
1910.181(a)(9) Materials Handling and Storage, Stiffleg Derrick
A stiffleg derrick is a derrick similar to a guy derrick except that the mast is supported or held in place by two or more stiff members, called ...
OSHA 1910 General Industry > N Materials Handling and Storage > 1910.181 Derricks > 1910.181(a) Definitions Applicable to This Section > 1910.181(a)(9) Stiffleg Derrick
1910.181(a)(7) Materials Handling and Storage, Guy Derrick
Guy derrick means a fixed derrick consisting of a mast capable of being rotated, supported in a vertical position by guys, and a boom whose bottom ...
OSHA 1910 General Industry > N Materials Handling and Storage > 1910.181 Derricks > 1910.181(a) Definitions Applicable to This Section > 1910.181(a)(7) Guy Derrick
1910.181(a)(4) Materials Handling and Storage, Breast Derrick
Breast derrick means a derrick without boom. The mast consists of two side members spread farther apart at the base than at the top and tied together ...
OSHA 1910 General Industry > N Materials Handling and Storage > 1910.181 Derricks > 1910.181(a) Definitions Applicable to This Section > 1910.181(a)(4) Breast Derrick