Commitments	6 Months Ended
Jun. 30, 2025
Commitments [Abstract]
Commitments	16. Commitments (a) Mineral Leases The Company leases mineral interests and surface rights from land owners under various terms and royalty rates. The future minimum royalties and lease rental payments under these leases as of June 30, 2025 are as follows: (in US$ thousands) Amount Year ending December 31, 2025 $ 2,752 2026 4,122 2027 4,084 2028 4,027 2029 4,016 Thereafter 17,687 Total $ 36,688 Mineral leases are not in scope of ASC 842 and continue to be accounted for under the guidance in ASC 932, Extractive Activities – Mining. (b) Other commitments As of June 30, 2025, purchase commitments for capital expenditures were $ 27.7 million, all of which is obligated within the next twelve months. In Australia, the Company has generally secured the ability to transport coal through rail contracts and coal export terminal contracts that are primarily funded through take-or-pay arrangements with terms ranging up to 12 years . In the U.S., the Company typically negotiates its rail and coal terminal access on an annual basis. As of June 30, 2025, these Australian and U.S. commitments under take-or-pay arrangements totaled $ 626.0 million, of which approximately $ 21.0 million is obligated within the next twelve months.

16.

Commitments

(a)

Mineral Leases

The

Company

leases

mineral

interests

and

surface

rights

from

land

owners

under

various

terms

and

royalty

rates. The future

minimum royalties

and lease rental

payments under

these leases

as of

June 30, 2025

are as

follows:

(in US$ thousands)

Amount

Year ending

December 31,

2025

2,752

2026

4,122

2027

4,084

2028

4,027

2029

4,016

Thereafter

17,687

Total

36,688

Mineral leases are not

in scope of ASC

842 and continue to

be accounted for

under the guidance in

ASC 932,

Extractive Activities – Mining.

(b)

Other commitments

As of June 30, 2025, purchase commitments for capital expenditures were $

27.7

million, all of which is obligated

within the next twelve months.

In Australia, the

Company has generally

secured the ability

to transport coal

through rail contracts

and coal export

terminal contracts that are primarily funded

through take-or-pay arrangements with terms ranging up to

12 years

In the U.S.,

the Company

typically negotiates

its rail and

coal terminal

access on

an annual

basis.

As of

June

30,

2025,

these

Australian

and

U.S.

commitments

under

take-or-pay

arrangements

totaled

626.0

million,

which approximately $

21.0

million is obligated within the next twelve months.