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They could be found in other common products including carbon copy paper, caulking and paint.

PCBs are chemicals once widely used to insulate electrical equipment and in other common products like carbon copy paper, caulking, floor finish and paint.

The Xerox print production came to a commemorative end with “Upon the Completion of a Love Affair With a Machine,” an unassuming assemblage composed of a pastoral jigsaw puzzle piece showing grazing cows that is attached to an empty tattered box for copy paper.

His mother worked in real estate on Valley Boulevard at an escrow company, where he spent evenings at the office with her, drawing on blank pieces of copy paper.

The chemicals were once used widely to insulate electrical equipment, and in carbonless copy paper, caulking, floor finish and paint.