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Note 7 - Property, Plant and Equipment | 6 Months Ended
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Sep. 30, 2025
Notes to Financial Statements |
Property, Plant and Equipment Disclosure [Text Block] | NOTE 7 — PROPERTY, PLANT AND EQUIPMENT At September 30, 2025, the Company's construction in process balance of approximately $2.3 million consisted of approximately $1.9 million associated with additional processing equipment being installed in our Granite City, IL facility. The remaining balance consists of several smaller projects among our facilities.

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