Rock Products

JUL 2015

Rock Products is the aggregates industry's leading source for market analysis and technology solutions, delivering critical content focusing on aggregates-processing equipment; operational efficiencies; management best practices; comprehensive market

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30 • ROCK products • July 2015 An item in Rock Products' "Sidetalk" column mentioned a relatively new invention, a steam shovel and locomotive crane combined. One article in 1910 featured a new separator unlike all pre- vious, in that it "maintained constant vibration by way of many tiny hammers pounding on the tautly-stretched cloth." The separator delivered between one and four sizes of prod- uct and used 1 hp. The first dust collector was mentioned in the August 1910 issue of Rock Products. In 1903, a reader had commented that, "If some ingenious man will devise a method by which (dust) can be successfully and economically utilized, he can secure an extended job." It had only taken seven years before a dust collector, which placed dust in a big bin, was marketed. The material was sold as fertilizer. At the same time, the application of lime as fertilizer was being heavily researched. Decade's End By the end of the decade, it was reported that the amount of crushed rock used for building and engineering purposes had doubled between 1908 and 1910. Portland cement pro- duction had jumped from 1.5 million bbls (220,000 tons) in 1896 to 76.5 million bbls (14 million tons) in 1910. Rock products operations were opening around the country, and industry leaders and members were building associa- tions and partnerships to work for common goals. Govern- ment agencies were beginning to work with the industry to develop standards, and this trend would grow during the next decades. Roads and sidewalks stretched out over the country, barely keeping up with population and automobile production growth. Urban areas were attempting sophis- tication, and development standards demanded longevity. And as the country changed and matured, so would the rock products industry. Next Month: Good Roads and the Great War: 1911-1919. Developing new screen panel designs and accessories to improve your screening effciency are a regular occurance at Polydeck. In fact, we're constantly taking your feedback and suggestions and putting them in front of our research and development team for evaluation and possible action. That's why we can offer more than 1,000 screen panel design options, with more being added all the time. Call us at 1-864-579-4594 or visit to fnd the Polydeck Regional Manager or dealer in your area.

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