235940  Wrecking and Demolition Contractors 

This U.S. industry comprises establishments primarily engaged in the
wrecking and demolition of buildings and other structures, including
underground tank removal and the dismantling of steel oil tanks, except
those for hazardous materials. The establishments engaged in wrecking
and demolition work may or may not sell materials derived from
demolishing operations. 

The data published with NAICS code 235940 include the following SIC industry:

1795 Wrecking and demolition work special trade contractors