# The Coal and Other Mines (Horses) Order, 1956, Paragraph 2


No horse shall—
(a) be taken below ground at a mine unless it has attained the age of four years; or
(b) be taken or allowed to be below ground at a mine if it is blind.

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Source: https://www.legislation.gov.uk/uksi/1956/1777/schedule/FIRST/paragraph/2 (the official version)
Page: https://openlegislation.uk/coal-and-other-mines-horses-order-1956/schedule-FIRST/paragraph-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.