This testimony discussed specific issues raised by OSHA in its proposed rule on concrete and masonry construction. OSHA discussed in that rule the design of handles on concrete buggies, maintaining that if the handles do not extend beyond the wheels of the buggy, then there is no need for knuckle guards. NIOSH believes such a design will help reduce the number of knuckle injuries if concrete buggies are pushed only in a straight line. NIOSH recommends that OSHA consider both the modification described in the proposed rule and the addition of knuckle guards. NIOSH also voices recommendations concerning the explanation for the design of concrete buckets, the use of tags in conjunction with lockout procedures, the requirement that workers not be located under precast concrete members that are being lifted or tilted into place, and several other points which OSHA discussed in relation to the proposed rule.