# Relationship history for MSHA mine 1102751

Current hierarchy: **Ricky D  Kirk; Jerry  Wells Jr → Cheyenne Resources, Inc. → Cheyenne Saline Co. #1**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Robert P  Downen et al → Cheyenne Saline Co. #1; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Jader Fuel Company Inc → Cheyenne Saline Co. #1; 1980-10-01 to 1992-06-28; source msha-controller-operator-history
- **controller_controls_operator:** Robert P  Downen et al → Jader Fuel Company Inc; 1980-10-01 to 1992-06-28; source msha-controller-operator-history
- **controller_controls_operator:** Edward W  Downen et al → Jader Fuel Company Inc; 1980-10-01 to 1992-06-28; source msha-controller-operator-history
- **operator_operates_mine:** Richerson Excavating Service → Cheyenne Saline Co. #1; 1992-06-29 to 1993-08-04; source msha-controller-operator-history
- **controller_controls_mine:** Jack  Richerson → Cheyenne Saline Co. #1; 1992-06-29 to 1993-08-04; source msha-controller-operator-history
- **controller_controls_operator:** Jack  Richerson → Richerson Excavating Service; 1992-06-29 to 1993-08-04; source msha-controller-operator-history
- **operator_operates_mine:** Roper Contracting Inc → Cheyenne Saline Co. #1; 1993-08-05 to 2000-03-24; source msha-controller-operator-history
- **controller_controls_mine:** Lisa  Walker → Cheyenne Saline Co. #1; 1993-08-05 to 2000-03-24; source msha-controller-operator-history
- **controller_controls_operator:** Lisa  Walker → Roper Contracting Inc; 1993-08-05 to 2000-03-24; source msha-controller-operator-history
- **controller_controls_mine:** Ricky D  Kirk  et al → Cheyenne Saline Co. #1; 1999-02-25 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Shawnee Contracting Llc → Cheyenne Saline Co. #1; 2000-03-25 to 2001-06-11; source msha-controller-operator-history
- **controller_controls_mine:** Kurt  Williams → Cheyenne Saline Co. #1; 2000-03-25 to 2001-06-11; source msha-controller-operator-history
- **controller_controls_operator:** Kurt  Williams → Shawnee Contracting Llc; 2000-03-25 to 2001-06-11; source msha-controller-operator-history
- **operator_operates_mine:** Illinois Fuel Company LLC → Cheyenne Saline Co. #1; 2001-06-12 to 2015-10-21; source msha-controller-operator-history
- **controller_controls_mine:** John C  Smith Jr → Cheyenne Saline Co. #1; 2001-06-12 to 2006-01-16; source msha-controller-operator-history
- **controller_controls_operator:** John C  Smith Jr → Illinois Fuel Company LLC; 2001-06-12 to 2006-01-16; source msha-controller-operator-history
- **controller_controls_mine:** Energy Coal Resources Inc → Cheyenne Saline Co. #1; 2006-01-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Energy Coal Resources Inc → Illinois Fuel Company LLC; 2006-01-17 to 2015-10-21; source msha-controller-operator-history
- **operator_operates_mine:** Cheyenne Resources, Inc. → Cheyenne Saline Co. #1; 2015-10-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ricky D  Kirk  et al → Cheyenne Resources, Inc.; 2015-10-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jerry  Wells Jr  et al → Cheyenne Resources, Inc.; 2015-10-22 to current/open; source msha-controller-operator-history