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     Diatomite is a sedimentary rock, that is white and yellowish in color. It is composed of fossilized skeletons of one-celled algae-like plants called diatoms. It is accumulated in marine areas. The
Honeycomb sillia structure is useful because of its high absorptive capacity and surface area. It is also very chemically stable. Its principal use is filtration.
     This substance of diatomite is extracted from many countries around the world. Out of 30 world countries the largest suppliers are the United States, China, Denmark, and Japan. China supplies about
350 thousand metric tons, Denmark extracts 375 thousand metric tons, and Japan, 190 thousand metric tons. About 725
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One environmental specification of color is put on diatomite, because it is a calcine product. It has to be of a light whitish color or it is not available to be mined. This helps environmentally because the color determines a standard for what companies can and cannot mine.
     I think one way for lessening the impact on the environment, would be to work harder at developing recycling methods for diatomite cake. If recycling could be put into use not as much diatomite would need to be mined. To excavate diatomite, different combinations of rippers, dozers, scrapers, front-end loaders, power shovels, and dump trucks are used. Underground mining is not too uncommon outside the United States. Usually, room-and-pillar methods are used, often with equipment similar to that used in open pits; in the smallest mines, hand tools are used. Dredging is used to recover diatomaceous mud from the bottom of lakes. Since all these methods are used in excavation, I think the best idea would be to choose the method with the least impact environmentally.
     Sixty four percent of the diatomite mined is used in filtration.
Fourteen percent is used for absorbents, and twelve percent used in fillers. While two percent used for insulation, and
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