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1. A bolt receiving clamp for use with a traffic box, having an inner flange comprising: a claw plate formed to have a first and second claw formed to capture a lowest edge of a traffic box, a top plate having a top surface and a bottom surface, the top plate having a first and second edge meeting at a right angle, the centers of the top plate and claw plates being separated by an adjustable tube that positions the top plate and the claw plates to be spaced apart and in parallel plane relation, the centers of the plates being coaxially aligned on an axis that passes through the centers of the plates and is normal to the plates, a nut plate coupled to the top plate for receiving and engaging a safety bolt that has passed through a cover plate, the top plate bottom surface being positioned on the inner flange of the traffic box, the claw plate claws being positioned to grip the lower edges of the traffic box, and a means for reducing the distance between the top plate and the claw plate.
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