Reinforced concrete structure construction: Carpenter climbs down column formwork using column form horizontal support clamps as steps, hand holds, and fall protection anchor points. The column is between the 4th and 5th floors, so carpenter is 45-50 ft above ground next to edge of floor as he climbs and works on outside of column formwork. Photo shows 5 stages, starting at left and moving to right as carpenter climbs down. He is wearing full body harness, with two safety lanyards hooked to the midbody rear ring. At start, his left side lanyard, hidden from view, is hooked to a support bracket to his front right near his right hand, and the right side lanyard is hooked to another body ring. 2nd photo shows this as he steps down and to right side. At 3rd photo he has hooked end of lanyard to 3rd clamp/bracket from top. He has stepped down in 4th photo and released and hooked to 4th clamp down in 5th photo. Carpenter is wise to use fall protection, which would have been improved if he had used both safety lanyards, hooked to one as the other is moved between anchors. Denver, Colorado December 2005.