You know what it looks like… but what is it called?
TAKE THE QUIZ“long-wall”
We have one entry that includes the term long-wall.
longwall system
noun: a method of coal mining in which the working face extends entirely across the seam, the work proceeds either away from or toward the main shaft, and the roof is allowed to cave in behind the workers
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- Arachnophobia is the fear of what multi-legged creatures?
You can make only 12 words. Pick the best ones!
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Merriam-Webster unabridged
