acid spoil

acid spoil

[′as·əd ‚spȯil]
(mining engineering)
Spoil material having pyrite content sufficiently high to produce acidic water as a result of weathering.
References in periodicals archive ?
The hypothesis is that plant roots will avoid zones of high soil acidity and, therefore, significant quantities of randomly distributed acid spoil can be present before declines in productivity of plants growing on minesoil will be measured.