Australia-headquartered Sandfire Resources has unveiled potential for new copper and silver discovery in Botswana, with the announcement of a maiden resource estimate for the A1 deposit, about 20 km from the Motheo copper mine, in Botswana. The company’s third-quarter results unveiled a maiden inferred resource estimate of 5.6-million tonnes at 1.3% copper and 10 g/t silver for the A1 deposit.