What changed in this filing

/stocks — the workspaceLOADING

Item 2. Properties

2021-02-24 compared with 2020-02-19 · 62 added, 44 removed, 152 unchanged (41% of the section changed)

1 unchanged sentence

Our administrative headquarters and production facilities as of December 31, 2020 were as follows:

Building Square Footage

Land Acreage Building Square Footage

Business Unit/Location

(State/County/Town)

Principal Operations

(State/County/Town) Principal Operations Leased Owned Leased Owned

Warrior Met Coal Mining, LLC

Alabama/Tuscaloosa/Brookwood

Administrative headquarters & mine support facilities

Alabama/Jefferson & Tuscaloosa/Adger & Brookwood

Coal mines, mine support facilities, land holdings & barge loadout

Alabama/Mobile/Mobile

Administrative headquarters, mine support facilities & real estate

Alabama/Tuscaloosa/Brookwood Administrative headquarters & mine support facilities — — — 668,764

Alabama/Jefferson & Tuscaloosa/Adger & Brookwood Coal mines, mine support facilities, land holdings & barge loadout 18,504 46,323 — —

Alabama/Mobile/Mobile Administrative headquarters, mine support facilities & real estate — — 1,471 —

Warrior Met Coal BCE, LLC

Alabama/Jefferson/Adger

Alabama/Tuscaloosa/Whitson

Coal mines & land holdings

Alabama/Jefferson/Adger Real estate — 223 — —

Alabama/Tuscaloosa/Whitson Coal mines & land holdings 26,194 2,112 — 2,360

Warrior Met Coal Gas, LLC

Alabama/Tuscaloosa/Tuscaloosa

Administrative headquarters & mine support facilities

Alabama/Tuscaloosa & Fayette /Various

Natural gas fields-developed

Alabama/Tuscaloosa/Tuscaloosa Administrative headquarters & mine support facilities 10 28 — 15,425

Alabama/Tuscaloosa & Fayette /Various Natural gas fields-developed 86,922 — — —

Warrior Met Coal Land, LLC

Alabama/Various/Various

Real estate-mineral interest only

Alabama/Various/Various Real estate — 21,042 400 12,430

Alabama/Various/Various Real estate-mineral interest only — 170,061 — —

Warrior Met Coal TRI, LLC

Alabama/Tuscaloosa/

Brookwood Real estate — 187 — —

Warrior Met Coal LA, LLC

Louisiana/Terrebonne/Houma

Louisiana/Terrebonne/Houma Real estate — 1,304 — —

Warrior Met Coal WV, LLC

West Virginia/Various/Various

Real estate-mineral interest only

West Virginia/Various/Various Real estate — 2,510 — —

West Virginia/Various/Various Real estate-mineral interest only — 3,740 — —

Estimated Recoverable Coal Reserves

4 unchanged sentences

4 and Mine No.

Within Stantec, the technical person primarily responsible for preparing the estimates of our proven and probable reserves for our Blue Creek mine is Kevin Whipkey.

Within Stantec, the technical person primarily responsible for preparing the estimates of our proven and probable reserves for our Blue Creek mine is Pat Akers.

Within McGehee, the technical person primarily responsible for preparing the estimates of our proven and probable reserves for our mining properties owned by Warrior Met Coal TRI, LLC and Warrior Met Coal Land, LLC is Sanford M.

27 unchanged sentences

Warrior Met Coal Mining, LLC

Blue Creek/Mary Lee

4 U Production Blue Creek/Mary Lee Assigned 40,676 40,621 54 — 40,675

7 U Production Blue Creek/Mary Lee Assigned 56,818 40,432 16,386 466 56,352

Warrior Met Coal BCE, LLC

Blue Creek U Exploration Mary Lee Unassigned 103,042 64,309 38,733 2,624 100,418

Warrior Met Coal TRI, LLC

Carter/Swann’s Crossing (8)

S Idled Brookwood Assigned 2,609 2,609 — 2,609 —

Warrior Met Coal Land, LLC

Bull Gap Mine

Beltona East S Development Black Creek Unassigned 1,013 1,013 — 1,013 —

Bull Gap Mine S Development Unassigned 624 624 — 624 —

Carter West S Development Unassigned 8 8 — 8 —

Howton S Idled Brookwood Unassigned 271 271 — 271 —

Kimberly S Development Black Creek Unassigned 128 128 — 128 —

S Production Mary Lee Assigned 3,191 3,191 — 3,191 —

Searles 8 & 10 (8)

Searles BW-UG

S Production Brookwood Assigned 6 6 — 6 —

Searles BW-UG U Exploration Unassigned 2,032 2,032 — 2,032 —

Total Alabama 210,418 155,244 55,173 12,972 197,445

10 unchanged sentences

4 and Mine No.

7 for the year ended December 31, 2019 was $170.72 per metric ton and at the time of the Blue Creek reserve study was $195 per metric ton.

7 for the year ended December 31, 2020 was $113.12 per metric ton, which was a year in which met coal prices were negatively impacted by the COVID-19 pandemic, and at the time of the Blue Creek reserve study was $195 per metric ton.

Our mineral reserves were also assessed using a historical three year average met coal sales price to determine the reserves were economical.

11 unchanged sentences

grade and/or quality are computed from the results of detailed sampling and (b) the sites of inspection, sampling and measurement are spaced so closely and the geologic character is so well defined that size, shape, depth and mineral content of reserves are well-established.

Probable (Indicated) Reserves are reserves for which quantity and grade and/or quality are computed from information similar to that used for proven (measured) reserves, but the sites for inspection, sampling and measurement are farther apart or are

otherwise less adequately spaced.

Probable (Indicated) Reserves are reserves for which quantity and grade and/or quality are computed from information

similar to that used for proven (measured) reserves, but the sites for inspection, sampling and measurement are farther apart or are otherwise less adequately spaced.

The degree of assurance, although lower than for proven (measured) reserves, is high enough to assume continuity between points of observation.

22 unchanged sentences

Warrior Met Coal Mining, LLC

40,676 LVM/MVM 10.76 0.76 N/A 6.50 1976 N/A

7 56,818 LVM 9.53 0.62 N/A 5.40 1978 N/A

Warrior Met Coal BCE, LLC

Blue Creek 103,042 HVM 9.10 0.70 N/A 5.20 N/A N/A

Warrior Met Coal TRI, LLC

Carter/Swann’s Crossing

Carter/Swann’s Crossing 2,609 M/T 11.23 1.23 12,575 10.43 2011 2013

Warrior Met Coal Land, LLC

Bull Gap Mine

Searles BW-UG

Beltona East 1,013 M/T 7.79 2.58 14,162 4.88 N/A N/A

Bull Gap Mine 624 M/T 4.07 1.54 14,013 4.98 N/A N/A

Carter West 8 M/T 6.57 1.58 13,937 1.10 N/A N/A

Howton 271 M/T 12.80 1.27 12,619 7.52 2006 2009

Kimberly 128 M/T 6.47 2.32 13,748 5.58 N/A N/A

Morris 3,191 T 20.46 1.19 11,260 5.12 2014 N/A

Searles 8 6 M/T 13.34 1.24 12,307 5.90 2013 N/A

Searles BW-UG 2,032 T 15.89 0.95 11,587 3.57 N/A N/A

Total Alabama 210,418

1 unchanged sentence

(1) 1 metric ton is equivalent to 1.102311 short tons.

(2) Coal Type:

M=Metallurgical Coal;

10 unchanged sentences

Preparation Plant

Location/Mine

Location/Mine Reserves

(thousands of

1 unchanged sentence

Equipment (3)

Rail Other (4)

Warrior Met Coal Mining, LLC

4 40,676 U LW,CM CSX T,B 1,180 80% ALPCO

5* N/A N/A N/A N/A N/A 907 86% ALPCO

7 56,818 U LW,CM CSX T,B 1,270 90% ALPCO

Warrior Met Coal BCE, LLC

In exploration or development

Blue Creek 103,042 U In exploration or development

Warrior Met Coal TRI, LLC

Carter/Swann’s Crossing

Carter/Swann’s Crossing 2,609 S S,T N/A T,B N/A N/A ALPCO

Warrior Met Coal Land, LLC

In exploration or development

Bull Gap Mine

In exploration or development

Searles BW-UG

In exploration or development

Beltona East 1,013 S In exploration or development

Bull Gap Mine 624 S In exploration or development

Carter West 8 S In exploration or development

Howton 271 S S,T N/A T N/A N/A ALPCO

Kimberly 128 S In exploration or development

Morris 3,191 S S,T N/A T N/A N/A ALPCO

Searles 8 6 S S,T N/A T N/A N/A ALPCO

Searles BW-UG 2,032 U In exploration or development

Total Alabama 210,418

18 unchanged sentences

Location/Mine

2020 2019 2018

Warrior Met Coal Mining, LLC

4 1,956 $ 115.87 2,015 $ 161.78 1,939 $ 182.20

7 5,176 $ 112.19 5,669 $ 173.91 5,078 $ 198.06

Total Alabama 7,132 7,684 7,017

5 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.

What changed 10-K

Item 2. Properties