# The Environmental Protection (Prescribed Processes and Substances) Regulations 1991, 

Extent: E+W+S

The industrial finishing of any product mentioned in paragraph (b) of Part A of this Section if the process does not fall within that paragraph.
In this Section, “asbestos” means any of the following fibrous silicates—
actinolite, amosite, anthophyllite, chrysolite, crocidolite and tremolite.

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Source: https://www.legislation.gov.uk/uksi/1991/472/schedule/1/part/3/crossheading/section-32-processes-involving-asbestos-2 (the official version)
Page: https://openlegislation.uk/environmental-protection-prescribed-processes-and-substances-regulations-1991/schedule-1/part-3/crossheading-section-32-processes-involving-asbestos-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.