Mine engineers make informed decisions on 500m orepass remediation, based on accurate condition data.
Petra Diamonds has unearthed a 138.57 carat Type IIa diamond at its Cullinan mine in South Africa.
Petra Diamonds has uncovered a 121.26 carat diamond.
The world’s major diamond miners have gathered to form a global group focused on the development of the sector.
A 232.08 carat white diamond worth $22 million has been uncovered.