The Stony Creek Mine, operated by Leonardite Products, is located in Williams County, North Dakota.
The legal description of our mine location is:
T. 154 N., R. 100 W., 5th P.M. North Dakota
Sec. 8: NE1/4, S 1/2NW1/4, N1/2 SW 1/4
Employing selective mining leonardite is surface mined in two-to-three-acre sections to the total depth of twenty feet. The leonardite is found in three layers between two layers of clay. Professional excavators remove and pile the top soil, subsoil and overburden separately.
Employees of Leonardite Products use a front end loader to remove the clay stringers and mine the leonardite. The leonardite is carried by dump truck to the processing plant approximately three miles from the mine. Generally mined between March and October, mined leonardite is stored in a stock pile on the processing plant grounds.
The ND Mine Permit, issued by the North Dakota Public Service Commission (PSC), is GRGR-0501. The PSC inspects our mine monthly and our records quarterly.
This is a Federal Mine #26-1460596The Federal Lease is NDM 065329
The BLM division based out of Billings, MT inspects our mine quarterly.
The MSHA Mine ID # is 32-00652.
The MSHA name for the mine is Leonardite Products Mine and Mill. MSHA inspects our operation twice per year.
Leonardite is dried and sized in a processing plant using a natural gas air heater regulated to a maximum temperature of 145º Fahrenheit (62.7º Celsius) for agricultural grade material. Sizing is accomplished with a Williams hammer mill and spinner separator. The material is packaged directly from this system. No other materials enter or are processed on this equipment. An extensive upgrade in 2019 included a new air heater, spinner separator, PLC system and relocated the electrical room.
This equipment is used to process Source X® and LenOX®. No other materials enter or are processed on this equipment. No processing aids or additives, including but not limited to grinding aids or dust suppressants, are ever used when mining, processing or packaging Source X® or LenOX®.
Source Coarse™, Leonardite Products' specialty humates are processed on a retrofitted sand and gravel drum dyer and a multi-deck vibrating screener.
This drum dryer using natural gas is regulated to a maximum of 168º Fahrenheit (75º Celsius). The sizing of Source Coarse™ is accomplished on three decks of vibrating stainless steel screens.
No other materials are dried or screened on this equipment. No other materials enter or are processed on this equipment. No processing aids or additives, including but not limited to grinding aids or dust suppressants, are ever used when mining, processing or packaging Source Coarse™.
