Macmahon (ASX:MAH) has confirmed a death at the Byerwen mine site in QLD, a coal mine – inking the second death to occur there in a month. Unions are now calling for the mine to be shut down Earlier this month, a worker called Chris Schloss was killed in an incident involving a crane. While owned by QCoal, Byerwen is effectively ‘run’ by Macmahon – the company describes itself as “undertaking all mining operations” at Byerwen on its website. MAH released the news to the market on Friday, confirming reports overnight from mainstream mastheads. The Queensland mining minister yesterday told state…