This roundup on powered mast-climbing work platforms presents a collection of electrically and hydraulically powered platforms that can reduce injuries and increase productivity. The ease with which powered mast-climbing work platforms can be raised and lowered along a building's facade makes them well-suited to masonry work. Because they allow masons to work at their optimum height, they reduce the incidence of repetitive-motion injuries, which is higher in the masonry industry than in most other construction industries, according to studies. The risk of other injuries, such as those inflicted by falling debris, those caused by bad scaffold planking, or falls from elevated scaffolding, are minimized on these platforms. Mast-climbing work platforms include safety features such as safety stops, speed controls, prefabricated flooring, and guardrails, which must be at least 36 inches high where they are the primary means of fall protection. Optional overhead protection reduces the danger from falling debris, and weatherproofing accessories reduce the risk of slipping. The improvements in safety are matched by the increases in productivity that mast-climbing work platforms yield over conventional scaffolding. By simply pushing a button, laborers put masons at a comfortable working level by keeping the next course of masonry at waist height, so masons can build up good continuity. Mason and laborer productivity can increase from 25% to 45%, depending on the platform model used. Mast-climbing work platforms are good for areas where forklift and crane access is limited because the platform can be raised and lowered to get material. The double-mast platforms are particularly suitable for working on high-rise buildings, as they have better stability than the single-mast platforms. However, single-mast platforms can be joined together faster and moved on the jobsite more easily. The following manufacturers' mast-climbing work platforms are featured in this article: Avant-Garde Engineering, Fraco Products Ltd., Alimak Elevator Co., Automatic Scaffold Co., HEK Platforms and Hoists Inc., and Dunlop Work Platforms.