# The Pollution Prevention and Control (Scotland) Regulations 2000, 


(a) Firing heavy clay goods or refractory goods other than heavy clay goods in a kiln where the activity does not fall within a description in Part A of this Section.
(b) Vapour glazing earthenware or clay with salts.

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Source: https://www.legislation.gov.uk/ssi/2000/323/schedule/1/part/I/chapter/3/crossheading/ceramic-production-2 (the official version)
Page: https://openlegislation.uk/pollution-prevention-and-control-scotland-regulations-2000/schedule-1/part-I/chapter-3/crossheading-ceramic-production-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.