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Property, Plant and Equipment | 12 Months Ended
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Dec. 31, 2024
Property, Plant and Equipment [Abstract] |
Property, Plant and Equipment | Property, Plant and Equipment Property, plant and equipment, at December 31, consist of the following:
| 2024 |  | 2023
Land and improvements | $ | 104.3 |  |  | $ | 105.1 |
Mineral Reserves | 34.7 |  |  | 35.8 |
Buildings and improvements | 404.3 |  |  | 328.8 |
Machinery and equipment | 1,664.0 |  |  | 1,580.7 |
Asset Retirement Obligation | 35.3 |  |  | 21.8 |
Construction in progress | 44.7 |  |  | 160.3 |
| 2,287.3 |  |  | 2,232.5 |
Less accumulated depreciation, amortization and depletion | (1,309.0) |  |  | (1,228.3) |
Property, plant and equipment - net | $ | 978.3 |  |  | $ | 1,004.2 |
For the years ended December 31, 2024, 2023 and 2022, we recorded depreciation, amortization and depletion expense of $81.8 million, $74.7 million, and $73.4 million, respectively.

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/360/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 6 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-7 + Details
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