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A hatched area of extracted ground.
Also known as: Worked out area symbol, Extracted ground marking
The mining plan symbol for a stope, the space left where ore has been extracted.
Marks the space left where ore has been extracted on a mining plan.
Contexts: Technical drawing, Maps
Records an absence rather than a structure, so the plan's most important areas are the ones where nothing remains.
Contexts: Technical drawing, Maps
An irregular area filled with hatching, its outline following the extent of extraction.