Excerpt from Mining Review for the Half-Year Ended June 30th, 1920, Vol. 32 Quite apart from the problems of mining the lignite, there are the problems of its p

Excerpt from Mining Review for the Half-Year Ended June 30th, 1919 Tion of the branch of the mining industry concerned with the production of copper. The seriou

Excerpt from Mining Review for the Half-Year Ended December 31st, 1920, Vol. 33 The opal miners at Stuart's' Range played an important part in augmenting the pr

Excerpt from Mining Review for the Half-Year Ended December 31st, 1919 1910-1919. Quan Value. 028. 025. 6 189 26 252 59 954 254 493 Tons 257 029 277 279 1 513 6

Excerpt from Mining Review for the Half-Year Ended December 31st, 1917 Gow. Silvsu. Copper. Year. Quantity. Value. Quantity. Value. Quantity. Value. Quantity. V