tunnel or adit plugs

[sjmcgroarty]

I am searching of a copy of Lang,B. (1999): Permanenet Sealing of Tunnels to Retain Tailings or Acid Rock Drainage. In: Fernadez Rubio, R.: Mine, Water & Environment II. - p. 647 - 655, 6 fig., 3 tab.; Sevilla (International Mine Water Association).

If anyone can tell me how to obtain a copy of this paper, that would be greatly appreciated.

Thanks & have a good day.

Steve McGroarty - State of Alaska Department of Natural Resources
steve.mcgroarty@alaska.gov