Property, Plant and Equipment

12 Months Ended

Dec. 31, 2021

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Note 10.  Property, Plant and Equipment

The major categories of property, plant and equipment and accumulated depreciation and depletion are presented below:

	December 31,
(millions of dollars)	2021			2020
Mineral rights and reserves	$	554.7		$	565.8
Land		50.6			50.9
Buildings		229.2			225.6
Machinery and equipment		1,262.8			1,254.3
Furniture and fixtures and other		139.9			138.9
Construction in progress		59.2			41.4
		2,296.4			2,276.9
Less: accumulated depreciation and depletion		(1,247.3	)		(1,237.3	)
Property, plant and equipment, net	$	1,049.1		$	1,039.6

In November 2021, the Company acquired Specialty PCC assets from a company in the Midwest United States for $6.9 million.

In the third quarter of 2020, the Company acquired the assets of a mining and hauling company in the western United States for $9.2 million to support our bentonite clay mining operations.

Depreciation and depletion expense for the years ended December 31, 2021, 2020 and 2019 was $77.4 million, $77.9 million and $82.1 million, respectively.