Underground Trials of Seismic-counter and Goafing Characteristics in Pillar Extraction
by V.Z. Brink, J.N. van der Merwe & I. Canbulat | June 2003
R1500,00
by V.Z. Brink, J.N. van der Merwe & I. Canbulat | June 2003
R1500,00
Attendance is free for all delegates – limited to 600 seats.