Tailing

Japanese: tailing

…A dam for depositing and dewatering slurry (a suspension of particles), also called a tailings dam. It is widely used in mines to process tailings from ore dressing. In ore dressing plants, the ore is crushed finely until 70-95% of the particles are 74 μm or less in order to separate the ore and perform sorting operations such as flotation. After the useful minerals are separated and recovered, a large amount of tailings is generated. This tailings is called tailings or tailings. The coarse part of the tailings is often used as a fill material for the mine, and the rest is deposited in a dike. …

From [Waste Rocks]

…Among the waste rocks generated in mines, especially the coarse ones are also called “suri”. Also, waste rocks generated during the ore dressing process are sometimes called “bikou” (also called “tailings”). On the other hand, waste rocks generated in coal mines are sometimes called “bota” mainly in the Kyushu region and “zuri” in the Hokkaido region. …

*Some terminology explanations that mention "tailing" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…スラリー(粒子懸濁液)を堆積し，脱水させるためのダムで，テーリングダムとも呼ばれる。鉱山で選鉱廃滓を処理するため広く用いられている。選鉱工場では，鉱石を単体分離して浮選(浮遊選鉱)などの選別操作を行うために，鉱石は74μm以下のものが70～95％程度になるまで細かく粉砕され，有用鉱物が分離回収されたのちに，大量の廃滓が生成される。この廃滓は廃石または尾鉱tailingと呼ばれる。廃石のうち，粗粒部は坑内充てん(塡)材などとして利用される場合が多く，残りは扞止堤に堆積される。…