
(in thousands)	June 30, 2025		December 31, 2024
Machinery and equipment	$	1,443,499	$	1,435,691
ROU finance lease	25,307		25,076
Buildings and improvements	18,188		18,188
Automotive equipment	16,279		16,279
Land and improvements	14,959		14,959


Construction in progress	33,935		30,623
Other	3,108		2,939
	1,555,275		1,543,755
Less: Accumulated depreciation and amortization	(842,212)		(808,164)
Total property, plant, and equipment, net	$	713,063	$	735,591

For the three and six months ended June 30, 2025, depreciation and amortization expense related to property, plant, and equipment was $20.5 million and $38.2 million, respectively, compared to $19.8 million and $38.9 million for the three and six months ended June 30, 2024, respectively. Depreciation expense for the three and six months ended June 30, 2024 includes an additional $3.4 million and $5.9 million, respectively, resulting from the Partnership updating the estimated useful lives of certain assets due to planned asset retirements by the end of 2024, mainly related to granular urea production assets.