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Schedule of Reconciliation of Provision for Income Taxes (Details) - USD ($) | 12 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Income Tax Disclosure [Abstract] |  |  |
Tax expense at federal statutory rate | [1] | $ 412,754 | $ 979,167
Statutory depletion carryforward |  | 152,054 | (257,509)
Change in valuation allowance |  | (3,578) | (749,912)
U. S. tax reform, corporate rate reduction |  |  |
Permanent differences |  | 46,819 | 28,196
State income expense, net of federal benefit |  | 94,507 | 164,510
Other |  | (82,012) | 58
Total income tax expense |  | $ 620,544 | $ 164,510
Effective income tax rate |  | 31.60% | 3.40%
[1] | The federal statutory rate was 21% for fiscal years ending March 31, 2024 and 2023.

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