Longwall Methane HPI’s Grosvenor 2017 to 1st July 2019. 24 HPI’s in 2018. 16 HPI’s 1st Jan to 1st July. 5.47% CH4 Peak (Explosive). All outside Inquiry Time Frames
There are 2 in 2017 and 24 in 2018. Methane HPI Tables 2017 and 2018 There are 16 Methane HPI's in the Longwall in the 6 months till 1st of…