Well a slightly different slant on the reason for its closure.... or it could be a different news feature as there is no date!
"A spokesperson for Historic Environment Scotland said: “We are currently carrying out works to insulate the roof space of Tormiston Mill. Whilst the nearby chambered cairn will not be directly affected by these works, the necessary closure of the visitor centre unfortunately means that there will be no access between 7 and 18 March."