BUSINESS is set to go underground again at Emley - nearly 18 years after the last pit there closed.
The owner of Emley Moor Business Park wants to build 16 more office units - below ground.
Owner Jeremy Patterson has commissioned semi-retired architect Arthur Quarmby, of Holme, to build the units, which are known as earth sheltered buildings.
They will be created on the industrial estate which is on the site of Emley Colliery.
The colliery closed in December 1985.
Mr Patterson, Mr Quarmby and Kirklees Council planning officers have been discussing the plans for a year.
A planning application has now been submitted and the council's planning committee is expected to make a decision on October 16.
Mr Quarmby, 69, said: "It is approved for industry but it supposed to be a green space, so we worked out this would be a good way to extend the industrial estate."
The idea is to cut into the hillside on the industrial estate to build the units.
They will be built around a circular courtyard area.
The grass and earth that is cut away will then be used to cover the outside of the buildings.
The buildings will be invisible from the outside - except for the doors.
The courtyard will not be covered over, as the offices will face into it to get light through their windows.
Mr Quarmby does not normally use windows but his usual tactic of putting in skylights was written off because it increased the risk of burglaries at the new units.
Mr Quarmby ran Arthur Quarmby Partnership - now called One 17 AD - until his retirement last year.
With 46 years' experience as an architect, he is an expert on earth sheltered housing and still carries out small scale projects.
A member of the British Earth Sheltering Association, he designed Britain's first earth sheltered house at Holme, in the Peak District National Park, and has lived in it since 1975 with his wife Jean.
Named `Underhill', it has a periscope to view the world above ground, an indoor, climate-controlled swimming pool and garden and a den, which overlooks the pool and is heated by a peat fire.
All this is lit by a domed skylight, which also covers a patio on the side of Underhill that is uncovered by grass.
This side has panoramic views to the Ridings Wood Reservoir.
There is also a music room, bedrooms, a bathroom, kitchen and living room.
There are now 30 or 40 underground houses in the UK but no others in the Huddersfield area.
Mr Quarmby also designed the subterranean Cumbria Visitor Centre at Penrith, though he dislikes the modified finished article.
He said earth sheltering was good because it was a cheap insulator for buildings - keeping them cool in summer and warm in winter.
It also hides unsightly structures and does not ruin green space.
Buildings can be covered in plants as well as grass, helping to conserve the countryside.
Mr Quarmby said: "Earth sheltered housing is becoming more common. It is a technique all the top architects are using, when it is appropriate.
"There is a considerable demand for these little units at Emley. Jobs are always welcome, and new businesses particularly.
"A lot of jobs were lost when the pit closed there."