Effective 28 Aug 1993

256.115. State geologist to acquire maps — owners or operators of underground mines closed permanently or temporarily to furnish true copies, when, contents. — 1. The office of the state geologist shall acquire copies of those underground mine maps that exist in museums and other repositories.

2. The owner or operator of each underground mine closed or abandoned before August 28, 1993, shall submit a true copy of all available maps of mine workings, shafts, slopes, tunnels, air vents or other openings to the mine map repository on or before one year after August 28, 1993.

3. The owner or operator of each operating underground mine wishing to close a mine, either temporarily or permanently, shall submit a true copy of maps showing the location of mine workings, shafts, slopes, tunnels, air vents, or other openings before closing or abandoning the mine.

4. Each map shall show at reasonable intervals the elevation in feet of the mine floor and mine back or ceiling. All elevations shall be based on an established and monumented datum, such as NAVD 1988. Such maps shall be oriented and positioned in the Missouri Coordinate System 1983. The maps shall show or note what horizontal control and vertical control stations were used to position the maps. It shall be acceptable to use an adopted local horizontal and vertical datum, but the relation between the local datums and NAVD 1988 and Missouri Coordinate System must be given.

5. Each map or set of maps shall show the name of the county, township, range and section or U.S. Survey in which the mine is located. The map shall also show the mine name, and mine owner or operator at the time of closing.

6. Each map shall contain a north arrow and scale. Each map shall be certified, signed, and sealed by the engineer or surveyor in responsible charge of the map preparation.

7. The owner may, with the approval of the state geologist, submit maps of older parts of the mine even though they are not certified by an engineer or surveyor, but they must be accurate and contain the information required in this section.

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(L. 1993 H.B. 312 & 257 § 1 subsec. 3 §§ 2, 3)