She left school at the age of 14 and found work as an assistant in a chemical laboratory.
Times,Sunday Times
He trained as a carpenter, but went on to study at night while working as an assistant in a chemical laboratory.
Times, Sunday Times
It consisted of two divisions: a chemical laboratory and a bacteriological laboratory.
Times, Sunday Times
In their youths, his sons worked in the assay shop and chemical laboratory.
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The lower story contained the metallurgical laboratory and second story contained the chemical laboratory, store rooms and work rooms.
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