{
  "url": "https://openlegislation.uk/coal-and-other-mines-ventilation-order-1956/schedule-FIRST/paragraph-21",
  "json_url": "https://openlegislation.uk/coal-and-other-mines-ventilation-order-1956/schedule-FIRST/paragraph-21.json",
  "legislation": "uksi/1956/1764",
  "legislation_title": "The Coal and Other Mines (Ventilation) Order 1956",
  "legislation_url": "https://openlegislation.uk/coal-and-other-mines-ventilation-order-1956",
  "path": "schedule/FIRST/paragraph/21",
  "kind": "paragraph",
  "number": "21",
  "heading": null,
  "text": "(1) Any road not required for the working of a mine and connecting airways which as regards any working face are intake and return airways shall forthwith be so stopped off as to minimise leakage of air through it.\n(2) In a mine of coal any such stopping between a main intake airway and a main return airway shall be—\n(a) constructed of a tight packing at least fifteen feet thick of stone, dirt, sand or rubbish; or\n(b) constructed of a tight packing at least nine feet thick of stone, dirt, sand or rubbish having the end of the packing nearest the intake airway faced with a wall not less than nine inches thick of masonry, brickwork or concrete the face of which is covered with a coating of mortar so as to prevent leakage of air.\nIn either case each space between the face of the stopping and the airway shall be kept clear.\n(3) Nothing in paragraph (2) shall apply to any mine in South Staffordshire in which the unworked coal is liable to spontaneous combustion.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/1956/1764/schedule/FIRST/paragraph/21",
    "retrieved_at": "2026-10-30T01:15:37.053660+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}