or materials at the site. Test checks indicate that the average lapse of time between on-continent receiving and Jobsite receiving on shipments made by surface vessels was approximately 53 days. It was found necessary to adopt the usual accounting control for items in trangit +o overseas locations by setting up an Inventory in Transit Account. The procedure provided that upon receipt at Jobsite the items should be cleared from the Inventory in Transit Account by appropriate charge to sither the applicabie warehouse inventory account, or the Work Order number applicable to the feature of work, to which many items of materials were delivered directly from the ship or the dock. In the latter type of transaction, this system required issuance of a summary Stores Issue Slip (supported by a copy of the official receiving report reflecting in detail the items involved) from Inventory in Tran-~ sit to the applicable Work Order number. The procedures provided for Stores Isaue Slips indicating end-usage of all items transferred from warehouse stocks. In addition +c on-continent furniture, fixtures, and equipment record cards, provision was made for the maintenance of stock record cards on all material items received at Jobsite; record cards on all items of equipment, installed and non-installed; and records of Jobsite furniture and fixtures. The Jobsite equipment record cards were duplicated at the Los Angeles Office and reconciled monthly with the Jobsite equipment record cards by means of a Jobsite monthly report listing additions to, and retirements from, equipment accounta. FPeriodically, as determined necessary, complete perpetual inventory equipment listings were originated at the Jobsite for use in the Los Angeles Office in effecting a 100 per cent reconciliation of the on-continent equipment records with the corresponding Jobaite records. Periodically, physical inventories of Jobsite equipment were taken and copies furnished the On-~Continent Controller. Copies of the monthly listings of additions to, and retirements from, equipment inventories; of the periodic complete listing of equipment perpetual in- ventory; and of the periodic physical inventories were also required by AEC at Los Alamos. Approximately 50,000 material and equipment items were recorded on stock record cards at Jobsite, and, in addition, equip- ment card records were maintained on more than 1,500 on-continent items. Copies of all invoices were furnished the Jobsite Property and Materials Accounting Section for use in pricing out, and clearing fren, the Inventory in Transit Account all items actually received and trans- ferred to work in progress or to warshouse inventories. Pricing was done on a first-in-first-out basia in order to reflect market trends and because of communications time lag. At the end of each calendar month, Jobsite prepared a summary statement of transfer from the Inventory in Transit Account, supported by journal vouchers indicating the offsetting charges to other accounts; warehouse inventory accounts or end-usage account. The Los Angeles Property and Materials Accounting Section then prepared a statement of reconciliation, listing in detail the items 11-20