It closed in the 1960s and was used as a warehouse .
Thus , Rock Mill was one of 104 mills brought into LCC ownership , and one of the 53 mills that survived through to 1950 , where it produced 30 and 40 count mule twist .
Rock Mill closed in the 1960s and was used as a warehouse .
Thus , Rock Mill was one of 104 mills brought into LCC ownership , and one of the 53 mills that survived through to 1950 , where it produced 30 and 40 count mule twist .