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The weld access hole or rat hole is a structural engineering technique in which a part of the web of an I-beam or T-beam is cut out at the end or ends of the beam. The hole in the web allows a welder to weld the flange to another part of the structure with a continuous weld the full width on both top and bottom sides of the flange. Without the ...
A welding helmet in use. A welding helmet is a piece of personal protective equipment used by welders to protect the user from concentrated light and flying particles. . Different welding processes need stronger lens shades with auto-darkening filters, while goggles suffice for
Rathole or Rat Hole may refer to: Rathole, Edmonton, a former two-lane tunnel in Edmonton, Alberta, Canada; Rat Hole, Gaping Gill; Chicago rat hole, a rat-shaped hole in a sidewalk in Chicago, Illinois; Rat-hole mining; removing chips inappropriately from the table in poker, aka "going south" an audio file archiving tool in Soundfont
The technique dubbed “rat-hole mining” has been used to dig through the final stretch of fallen rocks and debris and reach the workers, who have remained trapped in the collapsed tunnel in ...
When heavy machinery broke down trying to break through the debris trapping 41 workers in a tunnel in the Indian Himalayas, authorities called in a group of people whose profession is effectively ...
In 2014, Meghalaya's yearly coal production was around 6 million tonnes. [7] In 2014, the National Green Tribunal (NGT), a government body that handles environmental issues in India, issued an order banning mining in Meghalaya, specifically banning mining through the 'rat-hole' technique.
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