Glossary of coal mining terminology - Wikipedia
Outbye means going towards the pit shaft from the coal face. (opposite of inbye). [1] Outcrop. An outcrop is where the coal seam is exposed at the surface. [6] Overcast. A place where one …
Glossary of Mining Terms - Coal Education
Outcrop – Coal that appears at or near the surface. Overburden – Layers of soil and rock covering a coal seam. Overburden is removed prior to surface mining and replaced after the coal is …
Coal mining data: coal outcrops - GOV.UK
2014年10月9日 · Description of the data set showing known locations where a coal seam is near the surface. This document provides information for users on the national coal outcrops data …
Coal outcrops data set: User guide - GOV.UK
2024年8月15日 · The coal outcrops data sets illustrates locations where workable coal seams are present at or close to the surface. The positions of these coal outcrops have been captured …
Coal seams of the South Yorkshire Coalfield - Wikipedia
The seam consists of three parts: bottom and top softs and branch. The softs are a bright coal sometimes with inclusions of pyrites. The branch is a dull hard coal band that lies over the …
Circular 891 - Examples - USGS Publications Warehouse
Figure 12 illustrates a simple, nearly straight coal bed outcrop with three thickness-of-coal measurements. The three measurements are all thicker than the 14-inch minimum thickness …
Coal Outcrops - data.gov.uk
2024年6月19日 · Coal outcrops illustrate a location where a workable coal seam is present at or close to the surface. This layer identifies where an underground coal seam reaches rockhead,...
Coal outcrops - data.gov.uk
2024年7月29日 · The coal outcrop identifies where an underground coal seam reaches rockhead, indicating coal that may have been worked at some time in the past. Whilst this dataset …
Coal outcrops - Dataset - data.gov.uk
2024年7月28日 · The coal outcrop identifies where an underground coal seam reaches rockhead, indicating coal that may have been worked at some time in the past. Whilst this dataset...
Coal Outcrops - SpatialData.gov.scot
Coal outcrops illustrate a location where a workable coal seam is present at or close to the surface. This layer identifies where an underground coal seam reaches rockhead, indicating …