Coal.--No other mineral deposits are as widely scattered in almost every island of the Archipelago as coal. Extensive deposits which would warrant investments of capital are found in Cebu, Polillo, Mindanao, Masbate, and Mindoro. According to estimates made by the Bureau of Science the probable minimum tonnage of the different grades of coal found in this country is about 68,000,000 metric tons. Tests made by the same bureau show the following figures on the comparative calorific value of imported and local coal: CALORIFIC VALUES OF VARIOUS COALS Source of sample Calories Australia 6,614-6,987 Japan 6,691-7,127 Borneo 6,664 Philippines: Bataan 4,753 Uling, Cebu 6,733 Polillo 5,925 Negros 4,402 Zamboanga 6,427 Laguna 4,510 Butong 7,779 At present only the Cebu coal fields are extensively developed. The latest data on coal production in the Philippines are 5,407 metric tons for 1917; about 20,000 metric tons for 1918; 40,011 for 1921 and 36,939 for 1922. [1] The importations from 1908 to 1922 were as follows: IMPORTATIONS OF COAL INTO THE PHILIPPINE ISLANDS, 1908-1922 Year Quantity Value Metric ton Pesos 1908 504,244 2,884,764 1914 597,131 3,499,490 1919 400,537 7,781,307 1920 540,056 10,792,077 1921 461,889 6,987,004 1922 461,478 5,009,362 OTHER INDUSTRIES Fishing.--Philippine waters abound in food fishes of all kinds. However, the amount of fish caught is not even enough to meet the local demand. Fishing is mostly done in shallow water, the methods employed not being adequate for deep-sea fishing. There is great need for modern equipment for purposes of deep-sea fishing. The islands are still a heavy importer of fish products. The City of Manila alone consumes P4,000,000 worth of fresh fish a year. There are various sea products of the islands, which can be profitably exploited, such as oysters and other shell fish. Raw materials for canning purposes are available. Oil and tomatoes could easily be procured that possess good preserving qualities.