Strategically located on major trade routes, it was easy to reach by land and water, and endowed with high quality wood, steel tools and a variety of skilled labour.
To get at the oil and gas trapped in shale, drillers use powerful hydraulic pumps to force water and chemicals through holes punched in the concrete-and-steel well casing.
Water pressure keeps the device open, and steel rollers help it to bounce over tricky rocks and avoid getting snagged.
The lightweight and compact BarkLimiter series features integrated stainless steel contact points and is waterproof in one meter of water for up to 30 minutes.
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On the ground floor, the dining room, living room and study offer views of the water, framed by long steel windows.
Over the past week, computer experts in Italy, Russia and the US have posted details online on a clutch of vulnerabilities they have found in various SCADA packages used to automate installations as diverse as power stations, water purification plants, oil refineries, food factories, breweries and steel plants.
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On the opposite shore, glass-and-steel structures of breathtaking design were cantilevered over the water, all aglow.
This Ohio company, founded as a wooden barrel maker, makes steel drums, corrugated boxes, water bottles, rain barrels and basically every type of packaging you could think of.
Hurricane Katrina had turned Mars into a pile of steel spaghetti, dumped its 100-ton derrick under 3, 000 feet of water and mangled pipelines on the seafloor.
Rats are legendary swimmers, can chew through steel cable and can leap from great heights and survive, but the force of the water gushing through tight spaces may have been just too much for them to handle.
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With hydroforming, steel tubes are clamped into a mold and ballooned into the desired shape by 15 seconds of water under high pressure.
"This is a really significant event and we need to learn from it, not just in Washington but around the country, " Hersman said after taking a boat ride on the Skagit River below the dramatic scene where a truck bumped against the steel framework, collapsing the bridge and sending two vehicles and three people falling into the chilly water.
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