Economic Census of the Philippines, 1961: Mining and quarrying

11 Coal mining 1112 Bituminous coal 12 Metal mining 14 Stone quarrying 1414 Limestone 1417 Roadstone 15 are classified 19 Other non-metallic 199 Salt evaporating add to totals aining August 15 Bituminous coal mining Cagayan Valley Cement rock quarrying census chalk quarrying Chemical and fertilizer Chromite classified as large clay and sand Clay quarrying coal mining connected with salt D D D December 31 Eastern Visayas ESTABLISHMENTS 515 February 15 fertilizer mineral mining fixed assets footnote Gravel and sand gravel quarrying GROSS RECEIPTS Ilocos Norte including refining industry and industry iron ore mining ISIC code Industry ITEM Limestone and chalk Manganese Manganese mining Mercury mining Mindanao mining and quarrying mining except iron nearest November 15 November 15 employment number of establishments payroll period nearest period nearest November Pesos petroleum and natural PHILIPPINES quarrying establishments questionnaires refining if connected Sand and gravel sand extracting sand pits screening and grinding Table Total number