 A two @-@ week work @-@ in was held at the end of July and beginning of August 1980 . Thirty @-@ three volunteers worked on the mill over the work @-@ in . Two new main floor beams for the dust floor were made from <unk> of pitch pine which had previously been in a <unk> at Bury St <unk> . On 3 August 1980 , the <unk> and remaining sail fragments were removed by a mobile crane , followed by the cap frame and the cast @-@ iron curb sections . 
