longwall

A longwall face may range up to 400 meters in length.

The end of the block that includes the longwall equipment is called the face.

Management decided that an attempt would be made to set a 24-hour company longwall production record.

By 1894, the company had opened 5 mines, all using longwall mining.

All these districts were worked by the longwall system.

A big part of the change was installing 22 longwall machines like the robot here.

Johnny reached the top of his longwall and painted in the last shot holes.

Such low-technology longwall mines continued in operation into the 1970s.

The collapse of land over longwall mines, called subsidence, is prompt.

Gate roads are driven to the back of each panel before longwall mining begins.

A new longwall was purchased two years later which increased the capacity further to 3.5 million tons (3,175,000 t) per year.

The basic idea of longwall mining was developed in England in the late 17th century.

In thinner seams the advancing longwall mining method may be used.

Teaching at this point in time still took place on the site on Longwall Street.

The installation of the longwall nearly doubled the capacity of the mine.

That was a force seven bump, with its source plumb in the middle of our eastern longwall at 95 level."

Drilling, longwall and rockbreaking machines are now also available as autonomous robots.

The property is endangered by longwall coal mining.

"Design of rib pillars in longwall mining based on theoretical and practical approaches".

Algarin of Longwall, her father's chief wizardry consultant, had turned up an empty palm.

The cavity behind the longwall is called the goaf, goff or gob.

"No. 1 north longwall closed and green."

It recently merged with a Wigan-based firm to form a new company called Longwall International.

Longwall's management declined to be interviewed.

But the conventional longwall work organisation fails to build these tacit skills into the work groups.