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
Detalles de los registros
Signatura[E/]ECE/COAL/59
TítuloSurfacing 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.
FechaGeneva : UN, 3 Apr. 1981.
Descripción
1 p.
Notas
Transmits document [E/ECE/]COAL/GE.5/R.13.