Question

from which subject the question why was a coal- tar considerd as a nuisance

Answer 1

Answer:

Coal tar is a thick dark liquid which is a by- product of the production of coke and ... Evidence is inconclusive whether the coal tar in the concentrations seen in non-prescription .

Answer 2

Explanation:

Coal tar was considered a nuisance as it blocked up the pipes, so the gas makers and coke makers washed it out.

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