BSL Sign Language Dictionary

Search and compare thousands of words and phrases in British Sign Language (BSL). The largest collection online.

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drilling fluid

How to sign: a mixture of clays and chemicals and water; pumped down the drill pipe to lubricate and cool the drilling bit and to flush out the cuttings and to strengthen the sides of the hole

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Similiar / Same: drilling mud

Categories: lubricant, lubricating substance, lubricator

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