A visit was made to inspect the limestone and dolomite deposits at Cow Flat and Walls Siding. An overview of the working of these deposits, which includes details of the leases, production, prices, plant operations, future developments, and the present positions of the owner companies, is given in this report.

Report on mine maintenance, costs, equipment, employment, reserves and workings.

The mineral resources and mining industry of the Mandated Territory of New Guinea are the subject of this report. Mining operations, production, and geological conditions are discussed. Tables showing the estimated gold and silver production figures for the period 1926-41 are appended.

Mineral deposits in Papua include those of gold, copper and manganese and from these there has been produced gold; silver; copper, copper matte and copper ore; manganese ore; osmiridium and platinum. The gold has been obtained from alluvial deposits and lodes and from the copper deposits. Silver has been obtained along with the gold, but no separate record of it has been kept. The copper and manganese ores have been obtained from their respective deposits. The osmiridium and platinum have been won during the mining of the alluvial gold deposits. A fairly intensive search has been made for petroleum, but there has not been any commercial production. The total value of the mineral production to 30th June, 1941, is £3, 246, 353, the detailed production being as follows: [see table in record].

Summary report on the ore prospects of some Western Australian gold mines. The report provides details on production, ore deposits, and operations.

Report on mine maintenance, costs, equipment, employment, reserves, and workings.

A summary report of the maintenance work being carried out in various Western Australian gold mines.

Note on production, efficiency factors, and costs of twelve West Australian gold mines. Figures are provided for each mine respectively. A table showing mining and cost statistics is appended.

Report on mine maintenance, costs, equipment, employment, reserves, and workings.

Report on mine maintenance, costs, equipment, employment, reserves, and workings.