stripping ratio
Rare mining or civil engineering term for the ratio of overburden removed to ore extracted.
The stripping ratio of this mine is very high.
Rare technical term; the kanji spelling is the primary form given.
Variant kanji form using 剝 instead of 剥; both are rare.
Compound of 剥 (はく, 'to strip') + 土 (ど, 'soil') + 比 (ひ, 'ratio'). The exact origin is uncertain; likely a technical coinage in mining or civil engineering.