Diamond drilling for gold and other minerals, a practical handbook on the use of modern diamond core drills in prospecting and exploiting mineral-bearing properties including particulars of the cost of apparatus and of working

The greater part of the work having been written in the Transvaal, and with the special features there existent before the mind of the A uthor, his aim has been, whilst including much information which is generally applicable, to make the work more particularly adapted to the needs of South African diamond drillers and of other persons who may be contemplating the use of diamond drilling machines in connection with the prospecting or exploitation of mineral lands in South A frica