page_title: Spoil tip
hierarchical_section_title: Spoil tip
caption_attribution_description: English: Botayama(Slag heap) at Iizuka City in 1950s 日本語: 1950年代の飯塚市のボタ山
context_page_description: A spoil tip is a pile built of accumulated spoil – waste material removed during mining. These waste materials are typically composed of shale, as well as smaller quantities of carboniferous sandstone and various other residues. Spoil tips are not formed of slag, but in some areas, such as England and Wales, they are referred to as slag heaps.
  The term "spoil" is also used to refer to material removed when digging a foundation, tunnel, or other large excavation. Such material may be ordinary soil and rocks, or may be heavily contaminated with chemical waste, determining how it may be disposed of. Clean spoil may be used for land reclamation.
  Spoil is distinct from tailings, which is the processed material that remains after the valuable components have been extracted from ore.
context_section_description: A spoil tip (also called a boney pile, gob pile, culm bank, waste tip or bing)  is a pile built of accumulated spoil – waste material removed during mining. These waste materials are typically composed of shale, as well as smaller quantities of carboniferous sandstone and various other residues. Spoil tips are not formed of slag, but in some areas, such as England and Wales, they are referred to as slag heaps. 
  The term "spoil" is also used to refer to material removed when digging a foundation, tunnel, or other large excavation.  Such material may be ordinary soil and rocks (after separation of coal from waste), or may be heavily contaminated with chemical waste, determining how it may be disposed of.  Clean spoil may be used for land reclamation.
  Spoil is distinct from tailings, which is the processed material that remains after the valuable components have been extracted from ore.
caption: Botayama (spoil tip) in Iizuka City, Japan, in the 1950s
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