Abstract: A modified concrete block, apparatus and method of manufacture for making the concrete block which includes a bored arch-shaped inspection hole formed through one side wall into one cavity of the concrete block. The inspection hole, used for inspecting reinforcements within the cavity prior to filling with concrete, is formed by the apparatus and in accordance with the method of manufacture by boring a circular hole through the side wall at an acute angle to the side wall in alignment with one cavity. The hole, generally equal in diameter to the length of the cavity, is offset so that it extends from through one edge margin of the side wall toward, but not to, the other side margin of the side wall.

Abstract: A modified concrete block, apparatus and method of manufacture for making the concrete block which includes a bored arch-shaped inspection hole formed through one side wall into one cavity of the concrete block. The inspection hole, used for inspecting reinforcements within the cavity prior to filling with concrete, is formed by the apparatus and in accordance with the method of manufacture by boring a circular hole through the side wall at an acute angle to the side wall in alignment with one cavity. The hole, generally equal in diameter to the length of the cavity, is offset so that it extends from through one edge margin of the side wall toward, but not to, the other side margin of the side wall.

Abstract: A bracket for temporarily securing a flat plate against a slide of a concrete block of a wall, the plate for covering an inspection hole formed in the side of the concrete block used for inspecting reinforcements within a cavity in the concrete block before being filled with concrete. The bracket is generally shaped like an inverted "L" fabricated of rigid, slender material such as metal wire or the like. The upright leg of the inverted "L" is structured to be inserted into the inner cavity of a concrete block, while the horizontal leg extends outwardly through mortar between two stacked concrete blocks. The exposed end of the horizontal leg is structured to supportively receive and releasably retain, in conjunction with at least one other such adjacent bracket, a rigid bar horizontally disposed adjacent the exposed side of a plate.