thin coalの例文

• The Hibernia Formation also contains thin coal seams attesting to occasional establishment of swamp conditions.
• Because of the thin coal seams, a special type of mining was practised at Arigna.
• Eight thin coal seams are included.
• Due to its depositional environment and the organic material in its composition, there are thin coal seams running through the Menefee Formation.
• Lithological characteristics are green-grey, lithic arenites ( " Pennant sandstones " ) with thin mudstone / siltstone and seatearth interbeds, and mainly thin coals.
• These rocks are overlain by shales, mudstones and thin coals of Coal Measures upon which the towns of Oldham, Rochdale, Bolton and Wigan are located.
• The coal mined was in a seam known as Thin Coal, 25, 000 tons a year being produced by the colliery in the last two decades it operated.
• Thin coal seam with underclay pervasively churned by roots as cored from the Lower Cretaceous ( Berriasian to lower Valanginian ) Hibernia Formation at the Hibernia K-14 well in the Hibernia oilfield.
• It was a time before strip mining became dominant; when coal powered the nation and Kansas produced 2 million tons a year; when most of the 517 mines in Crawford and Cherokee counties were tunneled into the earth and miners usually worked lying on their sides, hacking out the thin coal seams with laborious effort for $ 1.25 a day.
• It was a time before strip mining became dominant; when coal powered the nation and Kansas produced 2 million tons a year; when most of the 517 mines in Crawford and Cherokee counties were tunneled into the earth and miners usually worked lying on their sides, hacking out the thin coal seams with laborious effort for $ 1 . 25 a day.