In Gima v. Hudson Coal Co., 310 Pa. 480, 165 A. 850 (1933), the Pennsylvania Supreme Court upheld Rule 29 of the Anthracite Mine Law wherein, rather than providing specific safety standards for the storage and firing of explosives, the General Assembly merely incorporated by reference any rules provided by the manufacturers on those matters since, as the Supreme Court quoted the Superior Court: "The General Assembly cannot be expected to enact laws which shall in themselves keep abreast of every advance of science and invention in the explosive line any more than it can of itself determine when a working place is free of gas and fit to work in . . . ." Id., 310 Pa. at 488, 165 A. at 853.