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- W166816728 abstract "Kettlebottoms are columnar masses of rock--the preserved casts of ancient tree stumps--embedded in coal mine roof strata (of which they are a part). Because unsupported kettlebottoms can detach from mine roof without warning, they are a hazard to miners. The primary objectives of this investigation were to better define and describe kettlebottoms and to evaluate kettlebottom support techniques in terms of safety and effectiveness." @default.
- W166816728 created "2016-06-24" @default.
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- W166816728 date "1983-08-01" @default.
- W166816728 modified "2023-09-26" @default.
- W166816728 title "Kettlebottoms: their relation to mine roof and support. Report of investigations/1983" @default.
- W166816728 hasPublicationYear "1983" @default.
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