Poland's coal group PGG warns coronavirus threatens losses, mine closures

WARSAW (Reuters) - Poland's biggest coal producer, the state-owned PGG, warned on Thursday of significant financial losses and a need to close some mines unless it cuts miners' working hours and salaries as part of its measures to adjust to the coronavirus crisis.PGG asked the unions earlier this week to accept a cut in hours and pay of up to 20% for three months, which would make the company eligible for government help.The trade unions rejected the offer and instead proposed that PGG stopped..