Inventories

3 Months Ended

Mar. 31, 2022

Inventories [Abstract]

Inventories

4.Inventories

(in US$ thousands)	March 31, 2022		December 31, 2021
Raw coal	$	12,829	$	17,334
Saleable coal		58,687		42,006
Total coal inventories		71,516		59,340
Supplies inventory		61,243		59,582
Total inventories	$	132,759	$	118,922

Coal inventories measured at its net realizable value were $4.0 million and $2.2 million at March 31, 2022 and December 31, 2021, respectively, and relates to coal designated for deliveries under the Stanwell non-market coal supply agreement.