Coal: Data Sheet

HEALY COAL – DATA SHEET

Producer:  Usibelli Coal Mine, Inc.
Location:  Healy, Alaska USA
Railroad: Alaska Railroad, state owned and operated.
Shipping Port: Seward Coal Terminal, owned by the Alaska Railroad Corporation
Coal Property: Approximately 35,100 acres (14,200 hectares) under coal lease primarily from State of Alaska.
Reserves:  Total proven surface reserves approximately 450 million tons.
Coal Rank: Subbituminous C
Coal Seams:  Mining is primarily from seams 3, 4, and 6 of the Suntrana Formation. These seams average approximately 18' (5.5m), 30'  (9.1m), and 24' (7.3m) respectively.
Preparation:  Raw coal is crushed to 2" x 0" (50 mm x 0 mm) but no washing is performed.  Screening circuit can reduce minus 1/4" (6 mm) to less than 10% with top size to 6" (150 mm).
Production:  The current production level is approximately 2 million tons (1.8 million metric tons) per year.


HEALY COAL - DATA SHEET - Typical As-Mined Analysis 

Proximate analysis:
 
Typical Gross As Received:
GAR Range
Moisture
29 %
27 - 30%
Ash 
9 %
7 - 12%
Volatile matter 
36 %
32 - 39%
Fixed carbon 
26.5 %
25 - 33%
Sulfur 
0.20 %
0.12 - 0.28%
Heat Value (Btu/lb)
7,560 
(4,200 kcal/kg)
7,200 - 7,740
(4000-4300 kcal/kg)
Initial Deformation Temp. (Red)
2,150 degrees F
(1,175 degrees C)
2050 - 2250 F
(1120 - 1230 C)
T250 Temperature 
2,320 degrees F
(1,275 degrees C)
 
Grindability (HGI) 
42
 

Ultimate Analysis  (MAF):
Carbon 70.0 %
Oxygen 24.0
Hydrogen 5.0
Nitrogen 0.8   (0.60 - 0.95)
Sulfur 0.3   (0.2 - 0.4)
Total  100.0 %
Typical Ash Analysis:
Silicon Dioxide SiO2 44.4%
Aluminum Oxide Al2O3 18.0
Titanium Dioxide TiO2 0.8
Iron Oxide Fe2O3 7.0
Calcium Oxide CaO 19.1
Magnesium Oxide MgO 3.1
Potassium Oxide K2O 1.2
Sodium Oxide Na2O 0.3
Sulphur Trioxide SO3 5.1
Phosphous Pentoxide P2O5 0.07
Strontium Oxide SrO 0.20
Barium Oxide BaO 0.57
Manganese Oxide MnO2 0.16
  Total  100.0 %
Blue bar
  MINE OFFICE
PO Box 1000
100 River Road  
Healy, AK 99743  
Tel: (907) 683-2226         
Fax: (907) 683-2253
FAIRBANKS OFFICE
100 Cushman St., Suite. 210
Fairbanks, AK 99701-4674
Tel: (907) 452-2625  
Fax: (907) 451-6543