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Concentrations	12 Months Ended
	Dec. 31, 2022
Risks and Uncertainties [Abstract]
Concentrations	Concentrations As of December 31, 2022, four customers accounted for 65% of the Company’s total accounts receivable. As of December 31, 2021, two customers accounted for 59% of the Company’s total accounts receivable. During the year ended December 31, 2022, 60% of the Company’s revenues were earned from four customers. During the years ended December 31, 2021 and 2020, 58% and 64% of the Company’s revenues were earned from three and four customers, respectively. As of December 31, 2022, one vendor accounted for 17% of the Company’s accounts payable. As of December 31, 2021, one vendor accounted for 19% of the Company’s accounts payable. During the year ended December 31, 2022, two suppliers accounted for 34%, of the Company’s cost of goods sold. During the year ended December 31, 2021 and 2020, one and two suppliers accounted for 22% and 45%, respectively, of the Company’s cost of goods sold. The Company’s primary product is Northern White frac sand and its mining operations are limited to Wisconsin and Illinois. There is a risk of loss if there are significant environmental, legal or economic changes to this geographic area. As of December 31, 2022, the Company employed 328 people, of which 54 were employed under collective bargaining agreements. There are no collective bargaining agreements expiring within one year.

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- Definition

The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-URI https://asc.fasb.org/topic&trid=2134479

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- References

No definition available.

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