25 Pa. Code § 221.21
The provisions of this § 221.21 amended under sections 301 and 302 of the Radiation Protection Act (35 P.S. § § 7110.301 and 7110.302); and section 1920-A of The Administrative Code of 1929 (71 P.S. § 510-20).
The provisions of this § 221.21 adopted February 1, 1972, effective February 2, 1972, 2 Pa.B. 212; amended December 18, 1987, effective December 19, 1987, 17 Pa.B. 5235; amended October 2, 1998, effective October 3, 1998, 28 Pa.B. 4894; amended October 26, 2018, effective January 24, 2019, 48 Pa.B. 6791. Immediately preceding text appears at serial page (304493).
This section cited in 25 Pa. Code § 221.35a (relating to fluoroscopic X-ray systems).