Surfacing material for opencast mines which lend themselves to reclamation where the use of powerful equipment and high-productivity stripping operations have been continuous : note / by the Secretariat.
1981
Notice détaillée
Symbole[E/]ECE/COAL/59
TitreSurfacing material for opencast mines which lend themselves to reclamation where the use of powerful equipment and high-productivity stripping operations have been continuous : note / by the Secretariat.
DateGeneva : UN, 3 Apr. 1981.
Description
1 p.
Notes
Transmits document [E/ECE/]COAL/GE.5/R.13.