In August 1988, the Occupational Safety and Health Administration (OSHA) imposed new standards for masonry construction. Two new requirements were added: a limited access zone on the unscaffolded side of the wall; and for walls more than 8 feet high, adequate bracing until the permanent supporting elements of the structure are in place. Billy Mac Terry, executive vice president of the Colorado Mason Contractor's Association, wrote Bill Patton of the regional OSHA office in Denver, asking several questions about the new regulations. Patton's answers, endorsed by the national OSHA office, are published here along with Terry's questions.