Construction News – #Construction #News & #videos

📅   Mon July 17, 2017 – Southeast Edition #15

Jared Wilson (R), environmental specialist, Great Southern Equipment Company, discusses the automatic continuous filter system.

Jared Wilson (R), environmental specialist, Great Southern Equipment Company, discusses the automatic continuous filter system.

On June 21 representatives of Great Southern Equipment Company (GSE), including Jared Wilson, environmental specialist, and Tommy Marks, vice president of sales (Orlando), met with city of Edgewater, Fla., municipal workers to demonstrate the features and benefits of a Vacall All Jet Vac (AJV). Later, the group put the machine to the test, cleaning a storm drain in the city of Edgewater.

Features of the Vacall Recycler, including asymmetrical shaped debris tank, enable it to hold more debris and to help avoid a rollover accident. Another unique feature of the Vacall Recycler is that it can be used as a recycler truck or a vacuum truck. The Vacall Recycler also includes a lifetime warranty on the debris tank and water tanks.

The Vacall Recycler also saves downtime, eliminating the need to refill water tanks and trips to the dump station, which saves hours on site. The recycler also saves thousands of gallons of water. To put this in perspective, one Vacall AJV combination sewer cleaning truck can save an average of 5.7 million gallons of city water each year when it’s equipped with a recycler continuous water recycling system, which typically requires no city water at all. The water savings calculation is based on typical municipality usage statistics, using 80 gallons of water per minute, six hours per day and 40 weeks a year. Individual city water savings may vary, based on jetting activity.

Additionally, the recycler system vacuums water from sewer lines, puts it through a five-step filtering process and then uses the same water to continue jetting. Located in the front of the debris tank for protection against stones and other vehicles, the recycler system also includes a 240-gallon segregated clean water tank section attached to a 10 gpm pump and 50 ft. hose reel for wash down.


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I cried out to him with my mouth; his praise was on my tongue.

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Heavy Construction News – Newly discovered ‘Casper’ octopod at risk from deep-sea mining — ScienceDaily

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Last spring, researchers made headlines with the discovery of what was surely a new species of octopod, crawling along the seafloor at a record-breaking ocean depth of more than 4,000 meters (about 2.5 miles) off Necker Island near Hawaii. The octopod’s colorless and squishy appearance immediately inspired the nickname “Casper.” Now, a report published in Current Biology on December 19 reveals that these ghost-like, deep-sea octopods lay their eggs on the dead stalks of sponges attached to seafloor nodules rich in the increasingly valuable metals used in cell phones and computers.

“Presumably, the female octopod then broods these eggs, probably for as long as it takes until they hatch — which may be a number of years,” says Autun Purser of the Alfred Wegener Institute’s Helmholtz Centre for Polar and Marine Research in Germany.

“The brooding observation is important as these sponges only grow in some areas on small, hard nodules or rocky crusts of interest to mining companies because of the metal they contain,” including manganese, he adds. “The removal of these nodules may therefore put the lifecycle of these octopods at risk.”

Purser explains that the deep-sea manganese nodules form similarly to pearls in an oyster. In a process that could take millions of years, metals gradually build up in rocky layers onto a small starting seed, perhaps a shell fragment or a shark’s tooth.

“These nodules look a bit like a potato, and are made up of rings of different shells of metal-rich layers,” Purser says. “They are interesting to companies as many of the metals contained are ‘high-tech’ metals, useful in producing mobile phones and other modern computing equipment, and most of the land sources of these metals have already been found and are becoming more expensive to buy.”

Purser says that little was known about the creatures found in the deep-sea environments where those attractive metals are found. In a series of recent cruises, the researchers set out to find the organisms that live there and to understand how the ecosystem and animals might be impacted by mining activities.

Their studies have shown that octopods are numerous in manganese crust areas, precisely where miners would hope to extract metals of interest. The mineral-biota association that they observed is a first for any octopod lacking fins (a group known as incirrate octopods), and it puts these captivating octopods, which live their long lives at a slow pace, at particular risk.

“As long-lived creatures, recovery will take a long time and may not be possible if all the hard seafloor is removed,” Purser says. “This would be a great loss to biodiversity in the deep sea and may also have important knock on effects. Octopods are sizable creatures, which eat a lot of other smaller creatures, so if the octopods are removed, the other populations will change in difficult to predict ways.”

Purser says that he and his colleagues continue to study the nodules and their importance to microbes and animals both small and large, including starfish, crabs, and fish.

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But from everlasting to everlasting the Lord’s love is with those who fear him, and his righteousness with their children’s children— with those who keep his covenant and remember to obey his precepts.

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Heavy Construction News – 2013 Bingham Canyon landslide, moment by moment — ScienceDaily

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In spring 2013, observation systems at Utah’s Bingham Canyon copper mine detected ground movement in a hillslope surrounding the mine’s open pit. Out of caution, mine managers evacuated personnel and shut down production, waiting for the inevitable.

On April 10, at 9:30 p.m. and again at 11:05 p.m., the slope gave way and thundered down into the pit, filling in part of what had been the largest human-made excavation in the world. Later analysis estimated that the landslide was at the time the largest non-volcanic slide in recorded North American history. Now, University of Utah geoscientists have revisited the slide with a combined analysis of aerial photos, computer modeling, and seismic data to pick apart the details. The total volume of rock that fell during the slide was 52 million cubic meters, they report, enough to cover Central Park with 50 feet of rock and dirt. The slide occurred in two main phases, but researchers used infrasound recordings and seismic data to discover 11 additional landslides that occurred between the two main events. Modeling and further seismic analysis revealed the average speeds at which the hillsides fell: 81 mph for the first main slide and 92 mph for the second, with peak speeds well over 150 mph.

The study shows how the team’s methods can be used to remotely characterize a landslide, and the details they elicited from the data may be useful in planning for and modeling future landslide events.

The results are published in Journal of Geophysical Research-Earth Surface.

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Carry each other’s burdens, and in this way you will fulfill the law of Christ.

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