Demolition/concrete construction: Three Caterpillar 345BL track mounted hydraulic backhoe excavators fitted with different demolition tools: The near tool, on the left, is a grappler for pulling walls, roofs, etc down and loading debris into trucks. The next tool is a pulverizer attachment that breaks debris up, picks reinforcing bars out of debris pile and transports bars to the bar shear/lopper to be cut into smaller pieces. In the rear is a shear tool that shears steel rebars into two pieces. Old City parking garage, Washington and First, Ann Arbor, Michigan, February 2006.

Demolition/concrete construction: Three Caterpillar 345BL track mounted hydraulic backhoe excavators fitted with different demolition tools: The near tool, on the left, is a grappler for pulling walls, roofs, etc down and loading debris into trucks. The next tool is a pulverizer attachment that breaks debris up, picks reinforcing bars out of debris pile and transports bars to the bar shear/lopper to be cut into smaller pieces. In the rear is a shear tool that shears steel rebars into two pieces. Old City parking garage, Washington and First, Ann Arbor, Michigan, February 2006.