The current manager of Big Pit: National Coal Mining Museum for Wales is Peter Walker, ex-Penallta Colliery (see bbclinksmachine.appspot.com/wales/coalhouse/sites/.../peterwalker.shtml? ); retiring in the near future.
The curator of coal mining collections is Ceri Thompson, ex-Cwm Colliery - probably one of the few mining or industrial / technical museum curators in the UK to have worked in the industry he curates. When I met him he explained that he was a face worker for 15 years, left the industry a couple of years after the 1985 strike, got a history degree and went into museums.