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Commitments and Contingencies	9 Months Ended
	Sep. 30, 2021
Commitments and Contingencies
Commitments and Contingencies	12. Commitments and Contingencies ​ Commitments ​ Both as of September 30, 2021 and December 31, 2020, the Company has equipment purchase commitments of approximately $0.4 million. ​ Other Contingencies ​ The Company has certain other contingencies resulting from litigation, claims, and other commitments that are subject to a variety of environmental and safety laws and regulations incident related to the ordinary course of business. The Company currently has no basis to conclude that any or all of such contingencies will materially affect its financial position, results of operations or cash flows. However, in the future, there may be changes to these contingencies, or additional contingencies may occur, any of which might result in an accrual or a change in current accruals recorded by the Company, and there can be no assurance that their ultimate disposition will not have a material adverse effect on the Company’s financial position, results of operations or cash flows. ​

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The entire disclosure for commitments and contingencies.

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