# Relationship history for MSHA mine 1514515

Current hierarchy: **Greg  Wells → Leslie Resources Inc → Cumberland Elkhorn Tipple**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Greg  Wells → Cumberland Elkhorn Tipple; 1983-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cumberland Elkhorn Coal & Coke Inc → Cumberland Elkhorn Tipple; 1984-03-01 to 1988-04-21; source msha-controller-operator-history
- **controller_controls_mine:** Smith Richard → Cumberland Elkhorn Tipple; 1984-03-01 to 1988-04-21; source msha-controller-operator-history
- **controller_controls_operator:** Smith Richard → Cumberland Elkhorn Coal & Coke Inc; 1984-03-01 to 1988-04-21; source msha-controller-operator-history
- **operator_operates_mine:** Cumberland Elkhorn Coal & Coke → Cumberland Elkhorn Tipple; 1988-04-22 to 1991-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Oxbow Carbon LLC → Cumberland Elkhorn Tipple; 1988-04-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Oxbow Carbon LLC → Cumberland Elkhorn Coal & Coke; 1988-04-22 to 1991-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Cumberland Elkhorn Coal & Coke → Cumberland Elkhorn Tipple; 1991-04-01 to 1992-06-03; source msha-controller-operator-history
- **controller_controls_mine:** Bennett Clyde V & Ramesh Malhotra → Cumberland Elkhorn Tipple; 1991-04-01 to 1992-06-03; source msha-controller-operator-history
- **controller_controls_operator:** Bennett Clyde V & Ramesh Malhotra → Cumberland Elkhorn Coal & Coke; 1991-04-01 to 1992-06-03; source msha-controller-operator-history
- **operator_operates_mine:** Leslie Resources Inc → Cumberland Elkhorn Tipple; 1992-06-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Greg  Wells → Leslie Resources Inc; 1992-06-04 to current/open; source msha-controller-operator-history