addition to each station being shown on a location map, the pertinent data -- orientation, location, and distance and direction from the zero towers -- were also shown on the drawings of the stations. APPROVAL OF DRAWINGS When working drawings were completed, prints were sent to J-Division for final approval. Sometimes new ideas had been developed or changes had been decided upon so recently that the designers had not been made aware of them, In these cases, marked prints were returned, and the changes incorporated, Revised prints were then returned to J-Division, When all requirements had been met, the drawings were approved by J-Division and written authorization to proceed with construction was issued by the Contract Administrator. This approval was functional approval only. Holmes & Narver was entirely responsible for proper and sound construction and the integration of all component parts. CIRCULATION OF COMPLETED DRAWINGS At the time prints of working drawings were sent to Los Alamos for approval, prints of the completed drawings were circulated to all design departments. This circulation was made for coordination between the departments. In most cases, prints covering complete design for a building or station were circulated as a group so that coordination of design criteria could be checked, After review, these prints were initialed by each department chief and returned to the reproduction unit with corrections or questions plainly marked with colored pencil, The returned prints were then reviewed by the Chief Draftsman or other delegated personnel and referred for corrections to the departments concerned, The marked prints were then filed for future reference, This print circulation procedure applied to revisions to drawings as well as to original issue, DISTRIBUTION OF PRINTS After all corrections indicated on the circulated prints or requested by J-Division were made, the drawings were signed as approved by the Chief Engineer or his assistant. Until a drawing was signed by the Chief Engineer it was considered a preliminary drawing. Upon signature by the Chief Engineer, a drawing became a working drawing. A complete record was kept of all prints made and distributed after approval, The usual distribution of prints was as follows: H & N Engineering Manager, Jobsite 8 prints, 1 transparency AEC Resident Engineer, 1 print Jobsite 5-13