# Relationship history for MSHA mine 1502609

Current hierarchy: **Bentley Claude E → C R D Coal Company Inc → No 3-C Mine**

- 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

- **operator_operates_mine:** Potter Mining Company Inc → No 3-C Mine; 1950-01-01 to 1972-12-31; source msha-controller-operator-history
- **controller_controls_mine:** James W  Potter et al → No 3-C Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James W  Potter et al → Potter Mining Company Inc; 1950-01-01 to 1972-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Billie Ratliff & Sons Coal Co → No 3-C Mine; 1973-01-01 to 1974-03-01; source msha-controller-operator-history
- **controller_controls_mine:** Ratliff Billie & Sons Coal Company → No 3-C Mine; 1973-01-01 to 1974-03-01; source msha-controller-operator-history
- **controller_controls_operator:** Ratliff Billie & Sons Coal Company → Billie Ratliff & Sons Coal Co; 1973-01-01 to 1974-03-01; source msha-controller-operator-history
- **operator_operates_mine:** Hackney Coal Co → No 3-C Mine; 1974-03-02 to 1974-08-16; source msha-controller-operator-history
- **controller_controls_mine:** Hackney Coal Co → No 3-C Mine; 1974-03-02 to 1974-08-16; source msha-controller-operator-history
- **controller_controls_operator:** Hackney Coal Co → Hackney Coal Co; 1974-03-02 to 1974-08-16; source msha-controller-operator-history
- **operator_operates_mine:** Robert Lester Coal Company → No 3-C Mine; 1974-08-17 to 1975-08-27; source msha-controller-operator-history
- **controller_controls_mine:** Lester Robert F → No 3-C Mine; 1974-08-17 to 1975-08-27; source msha-controller-operator-history
- **controller_controls_operator:** Lester Robert F → Robert Lester Coal Company; 1974-08-17 to 1975-08-27; source msha-controller-operator-history
- **controller_controls_mine:** Wellman Clarence & Danny → No 3-C Mine; 1975-05-10 to 1976-08-15; source msha-controller-operator-history
- **operator_operates_mine:** D C Wellman Coal Company → No 3-C Mine; 1975-08-28 to 1976-03-24; source msha-controller-operator-history
- **controller_controls_operator:** Wellman Clarence & Danny → D C Wellman Coal Company; 1975-08-28 to 1976-03-24; source msha-controller-operator-history
- **operator_operates_mine:** Lonesome Pine Coal Company → No 3-C Mine; 1976-03-25 to 1976-07-26; source msha-controller-operator-history
- **controller_controls_mine:** Fleming Danny D & Lenard Smallwood → No 3-C Mine; 1976-03-25 to 1976-07-26; source msha-controller-operator-history
- **controller_controls_operator:** Fleming Danny D & Lenard Smallwood → Lonesome Pine Coal Company; 1976-03-25 to 1976-07-26; source msha-controller-operator-history
- **operator_operates_mine:** C R D Coal Company Inc → No 3-C Mine; 1976-07-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bentley Claude E → No 3-C Mine; 1976-07-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bentley Claude E → C R D Coal Company Inc; 1976-07-27 to current/open; source msha-controller-operator-history