Coronado Global Resources Inc.
Statement of Coal Resources and Reserves for the
Logan County Complex in Accordance with
the JORC Code and United States SEC Regulation S-K 1300 as of December 31, 2024
Central Appalachian Coal Basin
West Virginia, USA
M
ARSHALL
M
ILLER
&
A
SSOCIATES
,
I
NC
.
32
Table 11-1:
General Reserve & Resource Criteria
numerous
properties
in the
region
for
the
purposes of
determining
the
economic
viability of
the
subject coal reserves.
Item
Parameters
Technical Notes & Exceptions*
Reserve Classification
Reserve and Resource
Coal resources as reported are inclusive of coal reserves.
Reliability Categories
Reserve (Proven and Probable)
Resource (Measured, Indicated & Inferred)
To better reflect geological conditions of the coal
deposits, distance between points of observation is
standard USGS (in meters), respectively, for measured
and indicated and inferred.
Effective Date of Resource Estimate
December 31, 2024
Coal resources were updated for depletion and non-
material resource additions based on information from
Coronado.
Effective date for coal resources is as of
December 31, 2024.
Effective Date of Reserve Estimate
December 31, 2024
Coal reserves were updated for depletion and non-
material reserve additions based on information from
Coronado.
Effective date for coal reserves is as of
December 31, 2024.
Seam Density
Variable, dependent upon seam characteristics
(based on available drill hole quality).
In the
absence of laboratory data, estimated by (1)
assuming specific gravity of 1.30 for coal and 2.25
to 2.5 for rock parting, or (2) 1280 kg/m
3
to 1324
kg/m
3
•
Underground-Mineable Criteria
Map Thickness
Total seam thickness
Minimum Seam Thickness
0.76 meters (thermal coal); 0.68 meters
Minimum Mining Thickness
1.37 to 2.29 meters
Minimum Total Coal Thickness
0.76 meters (thermal coal); 0.68 meters
Minimum In-Seam Wash Recovery
50 percent; 40 percent where coal is belted
directly to preparation plant
Wash Recovery Applied to Coal
Reserves
Based on average yield for drill holes within
reserve area, or in the absence of laboratory
washability data, based on estimated visual
recovery using specific gravities noted above and
95 percent yield on “clean” coal
Out-of-Seam Dilution Thickness for
Run-of-Mine Tonnes Applied to Coal
Reserves
Greater of 0.05 meters or 1.37 to 2.29-meter
minimum cutting height less seam thickness
2243 kg/m³ density used for dilution tonnage estimate
Mine Barrier
60.96-meter distance from abandoned mines and
sealed or pillared areas; 30.4-meter distance from
planned highwall miner panels
Minimum Reserve Tonnage
226,796 recoverable tonnes for individual area
(logical mining unit)
Minimum Overburden Depth
30.48 meters
Minimum Interval to Rider Coal
Considered on a case-by-case basis, depending on
interval lithology, etc.
<1.5 meters are resource
Minimum Interval to Overlying or
Underlying Reserves
Considered on a case-by-case basis, depending on
interval lithology, extent and type of extraction,
etc.
Typically, 12.19 meters
Minimum Interval to Overlying or
Underlying Mined Areas
Considered on a case-by-case basis, depending on
interval lithology, extent and type of extraction,
etc.
Adjustments Applied to Coal Reserves
6 percent moisture increase; 5 percent loss for
preparation plant inefficiency
Surface Mineable Criteria
Topographic Map Source
Reserves estimated based on aerial topography,
where available, and best available aerial
topography for other areas.
Pre-law highwalls
also based on aerial topography, where available
Map Thickness
Total mineable seam thickness (excluding removal
partings)
Mine Recovery Applied to Coal
Reserves
90 percent; 25 percent for previously