"We may distinguish three forms of sabotage: "1. Active sabotage which consists in the damaging of goods or machinery. "2. Open-mouthed sabotage, beneficial to the ultimate consumer, and which consists in exposing or defeating fraudulent commercial practices. "3. Obstructionism or passive sabotage, which consists in carrying out orders literally, regardless of consequences. "If you are an engineer you can, with two cents' worth of powdered stone or a pinch of sand, stall your machine, cause a loss of time or make expensive repairs necessary. If you are a joiner or woodworker, what is simpler than to ruin furniture without your boss noticing it, and thereby drive his customers away? A garment worker can easily spoil a suit or a bolt of cloth; if you are working in a department store, a few spots on a fabric cause it to be sold for next to nothing; a grocery clerk, by packing up goods carelessly, brings about a smashup; in the woolen or the haberdashery trade a few drops of acid on the goods you are wrapping will make a customer furious ... an agricultural laborer may sow bad seed in wheat fields," etc. "With two cents' worth of a certain stuff, used by one who knows, a locomotive can be made absolutely useless." "The first thing to do before going out on strike is to cripple all the machinery. Then the contest is even between employer and worker, for the cessation of work really stops all life in the capitalists' camp. Are bakery workers planning to go on strike? Let them pour in the ovens a few pints of petroleum or of any other greasy or pungent matter. After that, soldiers or scabs may come and bake bread. The smell will not come out of the tiles for three months. Is a strike in sight in steel mills? Pour sand or emery into the oil cups." "The electrical industry is one of the most important industries, as an interruption in the current means a lack of light and power in factories; it also means a reduction in the means of transportation and a stoppage of the telegraph and telephone systems. How can the power be cut off? By the curtailing in the mine the output of the coal necessary for feeding the machinery or stopping the coal cars on their way to the electrical plants. If the fuel reaches its destination what is simpler than to set the pockets on fire and have the coal burn in the yards instead of the furnaces? It is child's play to put out of work the elevators and other automatic devices which carry coal to the fire room. To put boilers out of order use explosives or silicates or a plain glass bottle which thrown on the glowing coals hinders the combustion and clogs up the smoke exhausts. You can also use acids to corrode boiler tubes; acid fumes will ruin cylinders and piston rods. A small quantity of some corrosive substance, a handful of emery will be the end of oil cups. When it comes to dynamos or transformers, short circuits and inversion of poles can be easily managed. Underground cables can be destroyed by fire, water or explosives," etc.
"The New Unionism," the book from which the above quotations were taken and which was purchased by the author of "The Red Conspiracy" at the I. W. W. headquarters, 1001 West Madison Street, Chicago, in the latter part of the spring of 1919, also informs us on page 123:
"As far as sabotage is concerned, all the I. W. W. speakers and the I. W. W. press countenance it although they steadily warn the workers against the indiscriminate and unsocial use of that weapon of warfare."