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шламоотстойник n stresses
coal.	slime pond (MichaelBurov)
construct.	sludge pit
dril.	slugging pit
gas.proc.	ash pit; ash pond; ash tray
goldmin.	slime settler (MichaelBurov); slurry settler (MichaelBurov)
met.	mud-settling sump; slime tank
mining.	slimepit
O&G	settling pit; drilling mud settling pit
O&G, sakh.	heater-desander
O&G, sakh.a.	slurry pump
O&G. tech.	sludge thickener
oil	depositing tank; mud-settling pit; slime thickener; sludge pond (serz)
silic.	waste pond
tech.	slime pit; slurry tank; slime storage pond; sludge separator; slurry clarifier

шламоотстойник: 4 phrases in 3 subjects

Mechanic engineering	1
Oil / petroleum	1
Oil and gas technology	2