Section 638. Firing Lines.--Each working place shall have a separate firing line, of not less than No.20 wire, with waterproof insulation and of sufficient length to allow the person firing the blast to be in a safe place.
Firing Lines
Act 346 of 1965, § 638, under PENNSYLVANIA ANTHRACITE COAL MINE ACT.
Act 346 of 1965, § 638