A Coal Mining Risk Assessment (CMRA) has been a statutory planning requirement since 2011 for developing high-risk areas, where shallow coal mining voids may exist. Patrick Parsons’ CMRA reports are compiled using data supplied by the Coal Authority, British Geological Survey and other sources of information such as the Durham Mining Museum and the Institution of Mining and Metallurgy. Approximately 75% of sites where a CMRA has been undertaken will recommend a physical investigation of the ground to confirm the underground mining status.

We have extensive expertise in ground investigation for former mining features, including:
  • Trial pits and trial trenches
  • Rotary openhole and coring
  • Mines gas and risk assessment for carbon dioxide, carbon monoxide, methane, oxygen depletion and hydrogen sulphide
  • Application of geophysics
From our desk and field-based risk assessments and CMRAs, we will then provide design advice to mitigate mining risk such as:
  • Drilling and grouting design and specification
  • Mine shaft cap design
  • Costing of mine working stabilisation
  • Foundation design, mitigation and advice
  • Design mitigation for roads and car parks
  • Obtaining regulatory approvals

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