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PROPERTY, PLANT AND EQUIPMENT (Tables)
12 Months Ended
Sep. 30, 2025
PROPERTY, PLANT AND EQUIPMENT  
Schedule of property, plant and equipment

September 30, 

September 30, 

  ​ ​ ​

2025

  ​ ​ ​

2024

Land

$

3,569,840

$

3,258,838

Buildings and leasehold improvements

 

12,376,476

 

11,534,943

Operating equipment and vehicles

 

98,037,108

 

75,768,103

Office equipment, furniture and fixtures

 

1,054,451

 

1,235,965

Assets not yet in service

 

411,097

 

87,772

 

115,448,972

 

91,885,621

Less accumulated depreciation

 

61,981,005

 

53,749,907

Property, plant and equipment, net

$

53,467,967

$

38,135,714