But one of the most powerful expressions of the possibilities attending the scientific utilization of waste, and one which brings home very forcibly to us the national wealth to be won from refuse, is associated with our woollen industry. Where would Yorkshire be without mungo or shoddy? Dewsbury has become the world’s centre for the disposal of old clothes and woollen rags. Here converge all the streams bearing abandoned flotsam and jetsam into the preparation of which wool has entered. There is scarcely anything more disreputable, if not actually repellent, than a sack of woollen rags. But pass that waste through suitable machines and a wonderful transformation in attractiveness, colouring, and design, as well as texture, is accomplished.
Wool can never be worn out. That is an indisputable axiom in woollen circles. It does not matter how many years ago the textile may first have been prepared, nor the many and varied vicissitudes through which it may have passed; it can be used over and over again. It may have travelled through the machines forty or fifty times, may have graced the form of a hundred persons, may have clothed a scarecrow or have been retrieved from a river in the course of its career. True, with each new lease of life it suffers a certain depreciation, but blended with new wool or cotton it is effectively revived. The history of a fibre of wool would be distinctly romantic and thrilling could it be but written, and even the wildest flights of imagination would be unable to rival stern fact. It is the ability to work and re-work up woollen textile for an indefinite period which has contributed to the prosperity of Yorkshire, and which has enabled this country to build up an export trade in this commodity exceeding £500,000,000—$2,500,000,000—a year in value.
An impressively successful, yet sinister, utilization of waste was brought to light during the war. In their methodical investigation of the dye-stuffs problem the Germans found it necessary to prepare a certain substance which constitutes the starting-point for the production of one of their leading products. Toluol, a by-product from the manufacture of gas, is taken and treated with nitric acid. Now orthonitrotoluol is the specific product in request, but nitrification produces two substances, orthonitrotoluol and paranitrotoluol, respectively. The last-named is of no use whatever, but its production has to be suffered, though, unfortunately, the yield thereof is twice that of the essential article. So far as the industrial pursuit in question is concerned the paranitrotoluol represented a sheer waste.
Now the German, when he encounters a waste, does not throw it away or allow it to remain an incubus. Saturated with the principle that the residue from one process merely represents so much raw material for another line of endeavour, he at once sets to work to attempt to discover some use for a refuse. Manufacturers in other countries were equally troubled with the accumulations of paranitrotoluol because the production of the two substances as a result of nitrifying toluol is strictly in accordance with constitutional chemical law. They also learned that the Germans had succeeded in turning it to advantage. What was this application? This was the poser. They sought enlightenment in this direction but found that the German was resolutely keeping his discovery to himself.
Other countries remained in ignorance until the Germans set out to materialize their fantastic dream of world-wide domination. When their hordes burst upon the frontier defences of Belgium, and their bombardment played sad havoc with the fortifications of Liege and Namur, the world marvelled. The intense destructive power of the high explosive which was being used was something new to warfare. It was promptly investigated, and then the use for the paranitrotoluol, the apparent incubus of the dye-stuffs-producing factories, was discovered. It was being turned into the destructive agent familiarly known as T.N.T., or trinitrotoluol, to give the explosive its true chemical designation.
It is perfectly obvious, from what has been related, that, if one will only devote sufficient energy and fertility of thought to the study of so-called rubbish and its properties, incalculable economic and financial benefits must redound to the individual. And as with individuals so with nations. The British race is generally assailed as being woefully improvident and remiss in the profitable exploitation of waste, but it errs in excellent company. The United States of America are probably far more guilty in this respect. According to the statement of the American Food Administrator the inhabitants of 24 cities between the Atlantic and Pacific Oceans, by ignoring the latent wealth contained in their garbage barrels, are throwing away sufficient grease and fat during the year to produce 30,000,000 one-pound bars of soap. On the other hand, 300 small towns, by pursuing thrift in this direction, are producing sufficient food from the disposal of their swill to yield 50,000,000 additional pounds of pork worth £1,600,000 ($8,000,000) a year, although in this instance the results might be doubled by the practice of more perfect methods. Another 350 towns, which disdain the value of their swill-tubs, are throwing away approximately £2,000,000 ($10,000,000) a year because they are not inclined to take a little trouble concerning the disposal of their garbage.
Contrast the methods obtaining in the United States and Britain with those peculiar to France. That picturesque figure of French civic life, the chiffonnier, is the perennial butt of humorists and cartoonists. But he is a powerful economic factor. Through his efforts millions sterling are saved annually to the French nation. The rag-picker and his colleagues “specializing” in other forms of spoil lurking in the ash-barrel pursue their work so diligently as to secure everything, except vegetable matter, which is capable of being worked up into other forms by the exercise of brains and commercial enterprise. It may not seem a savoury occupation to rake over the repulsive assorted contents of the household dust-bin, but it serves to swell, to an appreciable degree, the streams of raw materials flowing into the insatiable maws of industry. What is left after these industrious toilers have completed their work finds its way to the dust-destructor to assist in the raising of steam to drive engines and generators for the supply of electricity.
The diligent exploitation of waste exercises a far-reaching influence upon the wealth of nations. If we were to turn the whole of our residues, both industrial and domestic, to the utmost account we should be able to cut down our annual expenditure upon purchases from abroad to a very startling degree. Every ton of import saved not only represents the retention of so much sterling in our pocket, but releases a ton of shipping for the movement of other material, not necessarily to these islands, but between other countries, since it must not be forgotten that we derive an appreciable proportion of our national income from carrying the trade of the world. If we were to salvage all the rags entering into the domestic refuse of the nation we could reduce our imports of wool during the year by 19,000 tons, and allow 15,000 tons of shipping space to be devoted to other purposes. From the yield of cotton refuse derived from the dust-bins we could turn out 16,000 tons of new paper. If we were to become miserly in our collection of waste-paper and to turn it back into the mills, we could secure a further 44,000 tons of new paper during the year and save the import of 75,000 tons of wet pulp from Scandinavia. Were all our old tins handed over to the steel-makers we could reproduce from this raw material 74,000 tons of new steel and dispense with 148,000 tons of Spanish ore. The steel obtainable from the re-smelting of old tins alone would furnish sufficient material to construct approximately forty 3,000-ton vessels.
Fortunately, a change in the national habits of extravagance is to be recorded. The increased cost of living is compelling more sparing use of the necessaries of life and industry. The incontrovertible truth of the axiom “Waste not; want not,” although it may sound rather trite, has been brought home to us. But the complete salvage of waste is probably impossible of realization so long as the kitchen stove and furnace remain. Fire is an excellent destructive agency, but is far too handy for the removal from sight, if not from memory, of the multitude of odds and ends incidental to our complex social and industrial existence. With the coming of the electric age, and the supersession of kitchen stoves and factory furnaces by cheap current, the facilities for the ready destruction of what is really valuable raw material under the guise of waste will be removed. In the interests of economy and wealth, both individual and national, it is to be hoped that the coming of the electric era may not be unduly delayed.