Following the 1979 demolition of the rectory and school, Corner Construction of Rapid City constructed the subterranean parish hall and the new rectory. During this time services were continued in the 1902 church.  Once the new construction was complete, services were held in the new parish hall while Jim Schopen (I believe) demolished the old church in the fall of 1981. In one photo, parishioners are seen leaving after the Saturday afternoon service which had been intereupted by the collapsing of the old church. Construction then started on the new church connecting it to the new portions of the building already complete. 
The little lady is my daughter Dena and is seen on the roof and in the roof truss helping her dad rescue an old electrical insulator in the lower left of the truss.