No employes less than 18 years of age shall engage in the following work or process:

1. (1) Stripping the stacks.
2. (2) Making repairs to ventilating systems.

3. (3) Working in the dry packing of any of the following:

   1. (i) Carbonate of lead.
   2. (ii) Litharge.
   3. (iii) Red lead.
   4. (iv) Basic sulphate of lead.
   5. (v) Sublimed white lead.

Source

The provisions of this § 13.143 amended June 10, 1977, 7 Pa.B. 1592. Immediately preceding text appears at serial page (13413).