50-73-206. Maps to be updated on basis of semiannual surveys. An extension of the last preceding survey of every mine in active operation shall be made once every 6 months, and the result of the survey, with the date, must be promptly and accurately entered upon the original maps to show all changes in plan or new work in the mine and all extensions of the workings to the most advanced boundary of the workings that have been made since the preceding survey.
History: En. Sec. 42, Ch. 120, L. 1911; re-en. Sec. 3484, R.C.M. 1921; re-en. Sec. 3484, R.C.M. 1935; amd. Sec. 14, Ch. 185, L. 1949; amd. Sec. 14, Ch. 267, L. 1974; R.C.M. 1947, 50-433(part); amd. Sec. 64, Ch. 613, L. 1989; amd. Sec. 5, Ch. 51, L. 2019.
Structure Montana Code Annotated
Chapter 73. Safety in Coal Mines
Part 2. Maps, Surveys, and Boundary Lines
50-73-201. Operator to make map of coal mine
50-73-203. Map of underground working
50-73-205. Copies of maps for department
50-73-206. Maps to be updated on basis of semiannual surveys
50-73-207. Annual surveys in mines having only five people on shift
50-73-208. Final survey and map update when mine abandoned or worked out
50-73-209. Procedure when operator fails to furnish or update map