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Getting Schooled in Infrastructure

Getting Schooled in Infrastructure By Mark S. Kuhar

The “Getting Schooled in Infrastructure” school bus tour kicked off at the now-closed I-495 bridge in Wilmington, Del., with a real school bus that has been crushed and carries a prop resembling a large piece of a fallen bridge. The bus will travel through more than 22 cities and Congressional districts.

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NSSGA Young Leaders: Greetings from Palm Springs

NSSGA Young Leaders: Greetings from Palm Springs Members of the National Stone, Sand and Gravel Association’s (NSSGA) Young Leaders (YL) gathered at the Riviera Palm Springs Resort & Spa in Palm Springs, Calif., in April for their annual meeting. Once again, I had the pleasure of attending such a great networking and informative event.

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Dig it at Diggerland

Diggerland USA will be a construction-themed adventure park where “children and their families will be able to drive, ride and operate heavy machinery in a safe family-friendly environment.” I can’t wait to go to Diggerland!

Diggerland USA will be a construction-themed adventure park where “children and their families will be able to drive, ride and operate heavy machinery in a safe family-friendly environment.”

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World’s Largest Two-Axle All-Wheel-Drive Mining Truck

Belaz-75710The Belaz-75710 is reportedly the world’s largest mining two-axle all-wheel-drive dump truck. With weight-carrying capacity of 450 metric tons, the new vehicle rolled out of the BelAZ plant in late 2013 is being field tested as the biggest machine of its class with a record-breaking capacity.

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What Makes River Rock Round?

Abrasion makes a rock roundFor centuries, geologists have recognized that the rocks that line riverbeds tend to be smaller and rounder further downstream. But these experts have not agreed on the reason these patterns exist. Abrasion causes rocks to grind down and become rounder as they are transported down the river. Does this grinding reduce the size of rocks significantly, or is it that smaller rocks are simply more easily transported downstream?

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