PERMFILE67396

• Permit No: M1977424
• IBM Index Class Name: Permit File
• Doc Date: 3/25/1979
• Doc Name: EXHIBIT A LEGAL DESCRIPTION AFFECTED LAND
• Section_Exhibit Name: EXHIBIT A
• Media Type: D
• Archive: No

~ J
' ' •
p
EXHIBIT D - MINING PLAN ~ I~ / ~ o
A. The Logan ~Aash Oil Shale Mine is a modified in-situ oil shale
operation. Standard mining methods are used to excavate adits
and raises for access in the construction of underground rooms.
The room sizes are calculated to provide the necessary void
space to create a chimney of oil shale when the oil shale
above each room is blasted with conventional explosives. A
flame front is established at the top of the chimney or retort
which causes the oil to flow to the bottom of the retor*_ where
it is pumped out to an oil/water separator (heater-treater
plant) for preparation for shipping.
Surface disburbances related to these activities include:
Area ~ Name and Location Acreage

1. A dump site located in the NE1/4 of the 30.00 acres
NW1/4 and the SE1/4 of the NW1/4 of Sec
25 with a capacity of 8.6 million cubic
yards of new rock.
2. Upper mine portal and bench located in the 3.00 acres
Nwl/4 of the NE1/4 and the SE1/4 of the
NE1/4 of Sec 25.
3. Lower mine portal and bench located in the 3.80 acres
SE1/4 of the NW1/4 and the SW1/4 of the
NE1/4 of Sec 35.
4. Research mine bench and dump located in the 5.00 acres
NE1/4 of the SE1/4 of Sec 25.
5.' Surface facility buildings and drill pads 3.00 acres
located in the SE1/4 of the NE1/4 of
Sec 25.
6~ Two overflow ponds located in the NE1/4 2.00 acres
of the NE1/4 of Sec 25.
7.J Area for future expansion of equipment 3.30 acres
and parts storage and additional raise bore
located in the NE1/4 of NE1/4 of Sec 25.
8.` Raise bore and ventilation fan site located 3.30 acres
in the SE1/4 of the NE1/4 of Sec 25.
9. Power substation located in the NE1/4 of .75 acres
the NE1/4 of Sec 25.
10. Helo-pad located in the NE1/4 of the NEl/4 1.00 acres
of Sec 25.