Fixed Assets, Mineral Leaseholds, and Asset Retirement Obligations (Tables)

9 Months Ended

Sep. 30, 2022

Fixed assets consisted of the following:


	September 30, 2022		December 31, 2021
Crude oil and natural gas pipelines and related assets	$	2,840,829	$	2,839,443
Alkali facilities, machinery and equipment	688,569		670,880
Onshore facilities, machinery and equipment	269,249		269,245
Transportation equipment	22,032		21,106
Marine vessels	1,013,713		1,018,284
Land, buildings and improvements	229,202		227,540
Office equipment, furniture and fixtures	27,066		23,965
Construction in progress	599,802		350,137
Other	41,168		43,440
Fixed assets, at cost	5,731,630		5,464,040
Less: Accumulated depreciation	(1,711,306)		(1,551,855)
Net fixed assets	$	4,020,324	$	3,912,185

Our Mineral Leaseholds, relating to our Alkali Business, consist of the following:


	September 30, 2022		December 31, 2021
Mineral leaseholds	$	566,019	$	566,019
Less: Accumulated depletion	(19,844)		(17,014)
Mineral leaseholds, net of accumulated depletion	$	546,175	$	549,005

Our depreciation and depletion expense for the periods presented was as follows:


	Three Months Ended September 30,				Nine Months Ended September 30,
	2022		2021		2022		2021
Depreciation expense	$	70,328	$	63,482	$	206,111	$	190,332
Depletion expense	896		959		2,830		2,575

The following table presents information regarding our AROs since December 31, 2021:


ARO liability balance, December 31, 2021	$	220,906
Accretion expense	10,175
Changes in estimate	3,189


Settlements	(12,267)

ARO liability balance, September 30, 2022	$	222,003

With respect to our AROs, the following table presents our forecast of accretion expense for the periods indicated: