{"product_id":"e-kiessling-o-mineral-resources-of-the-united-states-1930-vol-1-metals-classic-reprint-9780260920133","title":"Mineral Resources of the United States, 1930, Vol. 1: Metals (Classic Reprint)","description":"Excerpt from Mineral Resources of the United States, 1930\u0026lt;br\/\u0026gt;\u0026lt;br\/\u0026gt;Thus, due to adverse business conditions, the aggregate value of all mineral products in the United States in 1930, reached the lowest point since 1922. This figure, as compared with the total value for 1929, represented a reduction of 19 per cent. It is of interest, however, that the relative decline in value between 1930 and 1929 is only about one-half as severe as the 41 per cent decrease shown by the total value for 1921 as contrasted with the all-time record year of 1920. The 1930 total value was approximately equal to that reported for 1919 and 1922 and was approximately double that reported for any of the pre-war years 1912 to 1915. Comparisons for the various individual mineral products in 1930 show only minor and scattered departures from the common down ward trend in quantities and values, and no notable increases are recorded. The intensity of the decline, moreover, was far from uni form, and some branches of the mineral industry suffered much less than others. The mineral fuels as a group showed a decrease of about 13 per cent in value of total products. Less bituminous coal and anthracite were produced in 1930 than in any postwar year free from serious labor difficulties, and the average unit sales realizations were some what lower than in immediately preceding years. Petroleum produc tion decreased for the first time in six years; the output in 1930 dropped sharply to a level below that of any of the preceding three years, and the total value declined in somewhat larger ratio. The production of natural gas increased, while the total value remained approximately the same as in 1929; a decline in the output of natural gasoline was accompanied by a much larger relative decrease in total value.","brand":"Forgotten Books","offers":[{"title":"Default Title","offer_id":53735538852182,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0925\/5829\/5382\/files\/product_image_9780260920133_1.jpg?v=1781781545","url":"https:\/\/www.momoxbooks.com\/products\/e-kiessling-o-mineral-resources-of-the-united-states-1930-vol-1-metals-classic-reprint-9780260920133","provider":"momoxbooks","version":"1.0","type":"link"}