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Coal Inspectorate | Alert | No.387 V 1 | 19 February 2021

Use and application of Polyurethane Resin (PUR) in underground coal mines

Key issues


Operators of underground coal mines should be aware of the capability of polyurethane resins (PUR), to cause heating of coal due to exothermic reaction. It is essential that effective risk control measures are implemented when PUR is used in underground mining operations for the purpose of strata consolidation.

A recent investigation has considered the application of PUR for strata consolidation as a potential cause of heating of remnant coal. Investigations have identified that the use of PUR for strata consolidation has the potential to cause an exothermic reaction that is capable of heating surrounding coal sufficiently to create an ignition source.

The following recommendations are provided to Site Senior Executives (SSEs) of mines to assist them in ensuring risk control measures are effective for the use and application of PUR in underground coal mines.


Risk assessments

Whenever a risk assessment is conducted or reviewed for the application of PUR, the following should be considered:

Ground consolidation plans

1 This is not an exhaustive list and each mine should ensure appropriate risk assessments are conducted to ensure that Fire Watch inspections can manage risk to a level that is as low as reasonably achievable.

Investigations are ongoing and further information may be published as it becomes available. The information in this publication is what is known at the time of writing.

We issue Safety Notices to draw attention to the occurrence of a serious incident, raise awareness of risks, and prompt assessment of your existing controls.

Authorised by Peter Newman - Chief Inspector – Coal

Contact: Geoff Nugent, Inspector of Mines , 0436 628 501

Issued by Resources Safety & Health Queensland

Safety: This information is a guide only and is issued to promote safety through experience. It is not to be taken as a statement of law and must not be construed to waive or modify any legal obligation.
Placement: Place this announcement on noticeboards and ensure all relevant people in your organisation receive a copy.

All information on this page (Use and application of Polyurethane Resin (PUR) in underground coal mines - is correct as of time of printing (17 Apr 2021 1:16 pm).