§ 47.344. Exhaust systems.

 The following machines shall be covered and exhaust systems shall be installed for the removal of dust or fly:

   (1)  Dusting and opening machines in the manufacture of woolen and worsted yarns such as willows, burr pickers, and mixing pickers.

   (2)  Machines used in the preparation of cotton for carding of cotton yarns such as openers and pickers.

   (3)  Machines used in the manufacture of cotton yarns on cotton waste cards such as willows, pickers, and openers.

   (4)  Machines used in the spinning of asbestos yarn such as willows, pickers, and cards.

   (5)  The cylinders, workers, strippers, and doffers of cards for carding cotton waste shall be enclosed. Exhaust systems are not required.

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