Mine engineers decided to encase just the top part of the shaft with steel tubing to prevent rockfalls and further collapses during the extraction process.
The glass and steel cone on top of BBC Broadcasting House in central London stands, according to Mr Moon, "in tribute to all those who have sacrificed their lives so that the rest of us could be informed".
After so many months in which his primary human contact had been an occasional phone call or brief conversations with an inmate down the tier, shouted through steel doors at the top of their lungs, he found himself unable to carry on a face-to-face conversation.
FORBES: Too much privacy: Solitary confinement in U.S. prisons
The second fence, 15 feet high, consists of steel mesh, and the top is angled inward to make it harder to climb over.
It was only a matter of time before the hydrogen reached a level where it would detonate, and one after another, the first unit, then the third unit, and finally the second unit, suffered hydrogen explosions that blew off the steel panels and left the top of the reactor building exposed.
FORBES: Explainer: What Caused The Incident At Fukushima-Daiichi
The architects extended the split at the top of the concrete pier beyond the roadway into the steel masts above, forming an A frame.
WSJ: A Concrete Ribbon Through the Clouds | Millau Viaduct | Masterpiece by Joseph Giovannini
Normally, circulation would channel the hydrogen and oxygen to a recombiner where they would be restored back to water, but in the hours after the reactors were shut down, hydrogen was accumulating and separating in the wetwell and reached a point where it was vented into the sparse steel-frame structure at the top of the reactor building.
FORBES: Explainer: What Caused The Incident At Fukushima-Daiichi
The gains were a welcome change for Mittal, who dropped out of the top 10 Forbes Billionaires rankings earlier this year after a steep drop in the stock price of his steel company in the past year.
FORBES: Billionaire Harold Hamm Made News, Money Tuesday Backing American Independence
Obama also visited with workers representing over 60 labor unions working on the site as he signed one of the final steel beams to be installed as part of the building's framework at the top of the tower.
One by one, a lift truck is placing them carefully on top of squared-off black-and-white-striped steel pillars.
WSJ: Daniel Buren's Bright Periphery | 'Excentrique(s) Travail In Situ' at the Grand Palais in Paris
The most disturbing case was Nippon Steel, Japan's biggest steel maker, whose top managers had not heard of the Year 2000 problem until a year ago.
It has chosen to retain its opulent and comfortable interior almost precisely as it was, from the original cast-steel bases of the seats in the stalls all the way to the top of its five golden tiers.
Today, this result is emulated by either heating the wine to between 45 and 50 degrees Celsius after fermentation in stainless steel vats, or placing it in casks that sit on the top floor of wine cellars to bake in the heat for two years.
The design featured a wooden frame on top of a concrete-slab foundation, with an exterior covered in gray asbestos shingles. (Steel was in short supply.) The structure violated the Cambridge fire code, but it was granted an exemption because of its temporary status.
The Panthers are a point clear at the top of the Elite League, with Saturday's win at Sheffield marking their first league success in the Steel City since Boxing Day 2005.
The bulk of the profit comes from the top companies like Tata Consultancy Services (TCS), Tata Motors and Tata Steel.
Point being, unless Man of Steel really connects on a spiritual level, Iron Man 3 is arguably poised to be the top domestic release (and likely worldwide too) of summer 2013.
FORBES: Review: 'Iron Man 3' Is Best Comic Book-Inspired 'Part 3' Movie Ever
应用推荐