Rock Products

JUN 2019

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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24 • ROCKproducts • June 2019 considered for demolition in the early 1800s until Victor Hugo published The Hunchback of Notre Dame. Hugo called it "the aged queen of French cathedrals." He said, "Every face, every stone of the venerable monument is a page not only of the history of the country but also of the history of science and art." Renewed interest generated by the book and encouraged by the author led to a 20-year reconstruction project starting in 1844. It was not difficult to replace the stone, because it was mined in Paris. Few people realize that the City of Lights is a mining town. Paris sits over many abandoned under- ground mines that once produced Lutetian limestone for building. The area is also significant for producing gypsum used for plaster. The warm grayish pale yellow Lutetian stone contributes to the unique look of the city, and the gypsum mines were so productive that the sulfate mineral is often called "plaster of Paris." Secrets of Notre Dame %22072 %5($.(5 &20%,1$7,216 CUSTOMIZED TO YOUR SITE DECADES OF EXPERIENCE & CUSTOMER SERVICE For 60 years BTI has worked with aggregate & mining companies to power productivity and break into profitability. Whether you're above ground or underground, we offer over 12 different model series customized to fit your site for maximum endurance. APPLICATIONS: Primary crushers // grizzlies // draw points // stopes POWER YOUR PRODUCTIVITY 1-800-567-8267

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