The HHIC whitepaper also highlights the continued expertise shortages throughout the gas business on account of an ageing workforce. https://uclass.uos.ac.kr/local/ubonline/view.php?id=3026&returnurl=aHR0cHM6Ly93d3cucXVlc3Rmb3Jzb3VyZG91Z2guY29tL3VzZXIvNDc2MjQv