# Relationship history for MSHA mine 4606080

Current hierarchy: **Maplewood Mining Company Inc → Maplewood Mining Company Inc → Little Sara**

- 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:** Bright William T → Little Sara; 1976-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cove Mining Company Inc → Little Sara; 1979-10-01 to 1982-12-27; source msha-controller-operator-history
- **controller_controls_mine:** Campbell William A → Little Sara; 1979-10-01 to 1982-12-27; source msha-controller-operator-history
- **controller_controls_operator:** Campbell William A → Cove Mining Company Inc; 1979-10-01 to 1982-12-27; source msha-controller-operator-history
- **operator_operates_mine:** Land Use Corp → Little Sara; 1982-12-28 to 1984-02-06; source msha-controller-operator-history
- **controller_controls_operator:** Bright William T → Land Use Corp; 1982-12-28 to 1984-02-06; source msha-controller-operator-history
- **operator_operates_mine:** Maplewood Mining Company Inc → Little Sara; 1984-02-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Maplewood Mining Company Inc → Little Sara; 1984-02-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Maplewood Mining Company Inc → Maplewood Mining Company Inc; 1984-02-07 to current/open; source msha-controller-operator-history