10 unchanged sentences
Coal reserve and resource estimates are based on data obtained from drilling activities and other available geologic data.
−Removed: Estimating reserves and resources requires the use of a geologic, engineering, and economic assumptions.
−Removed: Our engineering, land and operational support personnel work closely with Marshall Miller to ensure the integrity and accuracy of the data used to calculate the estimates as well as to ensure the assumptions used are reasonable based on our historical results as well as current and future anticipated mine plans.
+Added: Estimating reserves and resources requires the use of geologic, engineering, and economic assumptions.
+Added: Our engineering and land personnel work closely with Marshall Miller to ensure the integrity and accuracy of the data used to calculate the estimates as well as to ensure the assumptions used are reasonable based on our historical results as well as current and future anticipated mine plans.
We provide Marshall Miller with historical property information including property maps, deed, lease, and permit information, drilling and lab results, mine plans, production quantities, development, capital, and operating costs as well as market information.
25 unchanged sentences
Met Coal by Volatility Thermal Sulfur Recovery Percentage (2)
−Removed: Mining Complex Location High-Vol A High-Vol B Mid-Vol Low-Vol Thermal (1)
+Added: Mining Complex Location High-Vol.
Aracoma WV — 38,055 — — — 34,413 3,642 29 %
34 unchanged sentences
Met Coal by Volatility Thermal Sulfur Expected Recovery Percentage (2)
−Removed: Mining Complex Location High-Vol A High-Vol B Mid-Vol Low-Vol Thermal < 1% > 1%
+Added: Mining Complex Location High-Vol.
+Added: Thermal ≤ 1% > 1%
Aracoma WV — 131,383 — — — 58,564 72,819 21 %
21 unchanged sentences
12/31/2023 12/31/2024
−Removed: Mining Complex Coal Reserves Acquired/Leased Pre-Feasibility (1)
−Removed: Change in Mine Plan Divested (2)
−Removed: Production Coal Reserves
+Added: Mining Complex Coal Reserves Acquired/Leased Change in Mine Plan Divested Production Coal Reserves
Aracoma 41,276 — (636) — (2,585) 38,055
5 unchanged sentences
Total 315,957 268 (3,171) — (14,415) 298,639
−Removed: (1) Mineral areas subjected to Pre-feasibility study in current period.
−Removed: (2) Mineral control released through transfer, termination or lapse of lease, or sale of property.
Changes in Coal Resources (Tons in thousands)
1 unchanged sentence
Mining Complex Coal Resources Initial Assessment (1)
−Removed: Pre-Feasibility (2)
Change in Mine Plan Divested Production Coal Resources
8 unchanged sentences
(1) Mineral areas subjected to initial assessment in current year.
−Removed: (2) Mineral areas subjected to Pre-feasibility study in the current year.
Internal Controls Disclosure
4 unchanged sentences
The Company’s engineering personnel ensure estimates are based on current mine plans, incorporate the most recent drilling and lab data, properly reflect changes in permitting status, consider known encumbrances, and are consistent with operating knowledge and expectations in terms of mining methods, recovery rates, minimum seam heights or maximum strip ratios, and saleable qualities.
−Removed: The Company’s operations support personnel endeavor to ensure that estimates are prepared in accordance with applicable rules and regulations, that rationale for changes in estimates from prior years are reasonable and supportable, and that cash flow projections are based on reasonable and supportable assumptions with respect to forecasted production rates, coal pricing, and operating and capital costs.
+Added: The Company’s land and accounting personnel endeavor to ensure that estimates are prepared in accordance with applicable rules and regulations, that rationale for changes in estimates from prior years are reasonable and supportable, and that cash flow projections are based on reasonable and supportable assumptions with respect to forecasted production rates, coal pricing, and operating and capital costs.
The Company’s drilling, sample preparation and laboratory analysis are conducted in accordance with internal policies and procedures.
9 unchanged sentences
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.