From all of this the reader might judge that the operation, lasting, as it did, for only a little more than eight months, was a costly one. Such, however, was not the case, for a well-ordered and accurate cost system, kept from the very start in accordance with the best practices of factory accounting, showed that after charging in all equipment changes and overhead, the plant made complete masks which cost the Government about 50 cents per mask less than it cost to get complete masks by purchasing parts and assembling them under private contracts.
Along with this manufacturing development went the building up of an elaborate procurement force charged with the responsibility of providing parts to be assembled at the gas-defense plant and the Hero Manufacturing Co. This section faced a hard and intricate task, but though there were instances where a shortage of parts temporarily slowed down production, these were remarkably few. Many were the difficulties of buying new parts; many of the parts were the product of elaborate die work; die makers in the country were overworked. Specifications had to be written, checked, and approved, and a field inspection first had to be organized and trained so that the product from all the different plants could be relied upon as satisfactory for the assembling plants. But this problem was still further complicated by ever-recurring changes in design, made necessary as improvement followed improvement. Officers had to be trained in a day and then sent out to train inspection corps in manufacturing plants in many parts of the country. Inspection and procurement detachments were maintained in most of the eastern industrial centers. There were over 100 enlisted men and 9 officers in Akron, 30 enlisted men with 6 officers in Boston, and men and officers in over 60 cities. Here again the civilian and Army officer worked hand in hand; for Mr. Robert Skemp, a volunteer civilian from Pittsburgh, was in charge of this procurement, reporting to Lieut. Col. Besse and directing an organization made up almost entirely of officers and enlisted men.
The March output of masks was 183,000; that of April, 363,000; May, slightly less than this figure; that of June, 504,000; that of July, 671,000. In all, between January 1 and November 11, 1918, we built more than 5,000,000 gas masks.
In February, 1918, shortly before the German drive commenced, we received requisitions for sample lots of oiled mittens and oiled union suits as protection against mustard gas and also for chloride of lime to neutralize poison-impregnated earth. In their March drive the Germans used gas in much more protracted concentrations than before. Originally the masks had been worn only during the sporadic gas alarms, and then only for a brief period at a time.
The double-protection mask which we had been building had been admirable in its day, but it was no longer adapted to the sort of use to which it was evident it must now be put. In long-continued wear the mouthpiece would irritate the gums and lips of the soldier, and the face-piece band would cause excruciating headaches after a few hours. It had now become frequently necessary for men to wear their masks for eight hours at a stretch. The word discomfort is a weak description of the feelings of a man wearing one of our masks for that period.
Our authorities in France decreed for a single-protection mask and more comfort, even at the expense of a little safety. The result of these new conditions together with the establishment of closer relationship with our Expeditionary Forces, through a visit of Col. Dewey to France, was the determination to build masks in this country which should give the protection of the masks which we had been turning out and at the same time be comparatively comfortable. There had been brought out in France a single-protection mask, that is, a mask in which the inlet tube entered directly into the space between the mask and the face, with the orifices so arranged that the fresh air was drawn across the eyepieces. This was known as the Tissot mask. The principle of the Tissot was correct as far as comfort was concerned, since it did away with the irritating mouthpiece, but the chief danger in this mask arose from the fact that it was made of thin, pure gum rubber. We took the Tissot and endeavored to produce a mask of this type which should be gas-tight and yet rugged. In this work we experimented on hundreds of subjects to determine face and head sizes and shapes. It is interesting to note in this connection that the size of a man's face has nothing to do with the size of his head, as large heads with small faces and small heads with large faces occur not infrequently.
We made two developments of the mask without mouthpiece or nose clip. Both were ready for field tests in August, 1918. The one produced in Akron and assembled at the Philadelphia contracting plant was known as the Akron Tissot, or Type A-T.
At the start of operations in Long Island City Mr. Waldemar Kops, of New York, a manufacturer of corsets, came to the Government, asking an opportunity to do his part in the war. He was assigned to the gas-defense plant, and later, with the commission of major, took charge of the gas-defense Long Island laboratories. Maj. Kops had no experience with gas masks until he came to the gas-defense plant, but his experiments soon led to an improvement in the design of the Tissot mask. It was called the Type KT mask—the Kops-Tissot. Only a few hundred thousand were produced, though the latest model was scheduled for enormous production beginning in December, 1918. It possessed much of the protective efficiency of the old uncomfortable mask, the cut of the face piece insured a gas-tight connection with the head, it was relatively comfortable, and it was durable.
The call of the allies in the spring of 1918 for American troops in as great numbers as the ships could carry them to France resulted in still further increases in our mask requirements. At the height of the drive we were making over 40,000 masks a day. Approximately 35,000 employees were engaged in the manufacture of various gas-mask parts. Our carbon requirements were expanding at a rate that would have needed 400 tons of raw materials a day by December, 1918. We built 336,919 KT masks and approximately 200,000 A-T masks. In exact figures the total production of masks of all types was 5,692,499. Of these 3,666,683 were built at the gas-defense plant and 2,025,816 were assembled by the Hero Manufacturing Co. In addition, we furnished 3,189,357 extra filled canisters for the replacement of those used up by 40 hours of field service.
Hand in hand with this procurement and manufacturing achievement went the development of the technical section of the Gas Defense Division. This was known as the Long Island laboratories, manned by a personnel of several hundred men and officers. Here in its laboratories were solved the knotty problems that bridged the gap between experimental work and production. Many new designs were worked out, only to be rejected when tested. Here there were workrooms that could make sample lots of 1,000 masks, and here were located the chemical laboratories and the gas chambers in which the product of the gas-defense plant was tested daily by control chemical analysis and by actual breathing and wearing tests.