RE: Cornishknocker10 Oct 2018 23:20
Just to put some figures on why comparing an underground operation with a surface operation doesn't really work: -
In the last quarter, Wolf moved 2.5 million tonnes of dirt, producing 550,000 tonnes of ore, grading 0.2%WO3 and 0.04%Sn. So 2 million tonnes of waste rock produced to start!
From that the mill produced 42000 MTU APT and 70 tonnes of tin, generating total sales of au$12.7 million.
As a 500,000 tonne per year underground mine, we would be looking 600,000 tonnes per year (including waste from development), hoisting 500,000 tonnes at a head grade of 1% Sn equivalent, producing approximately 3500 tonnes of tin metal equivalent, realising sales of approximately £50 million per year (about twice what hemerdon are managing).