# The Mines and Quarries (Tipping Plans) Rules 1971, Article 5: Correlation with Grid


Every such plan shall be orientated to and correlated with the Ordnance Survey National Grid and marked with squares corresponding to the 100 metre squares shown on Ordnance Survey sheets on the scale of 1/2500.

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Source: https://www.legislation.gov.uk/uksi/1971/1378/article/5 (the official version)
Page: https://openlegislation.uk/mines-and-quarries-tipping-plans-rules-1971/article-5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.