Ministerial Regulation No. 23, B.E. 2523 (1980) issued under the Mineral Royalty Rates Act B.E. 2509.

The present Regulation is made under the Mineral Royalty Rates Act. In particular, the Regulation lays down provisions relating to collection of and amount of royalties on tin, minerals containing tungstic oxide, silver, gold, compound of tantalite and columbium, lead, zinc, ground barite, dimensional stone, industrial rock and other minerals. The text consists of 8 sections and 1 Schedule of minerals and mineral royalty rates.