# Relationship history for MSHA mine 4406720

Current hierarchy: **Jack  Slone → Lonesome Dove Mining Inc → No 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:** Jack L  Simmons et al → No 1; 1981-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Covenant Coal Corp → No 1; 1992-11-01 to 1993-03-14; source msha-controller-operator-history
- **controller_controls_operator:** Jack L  Simmons et al → Covenant Coal Corp; 1992-11-01 to 1993-03-14; source msha-controller-operator-history
- **controller_controls_operator:** Bill R  Simmons et al → Covenant Coal Corp; 1992-11-01 to 1993-03-14; source msha-controller-operator-history
- **operator_operates_mine:** Lonesome Dove Mining Inc → No 1; 1993-03-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jack  Slone et al → No 1; 1993-03-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jack  Slone et al → Lonesome Dove Mining Inc; 1993-03-15 to current/open; source msha-controller-operator-history