# Relationship history for MSHA mine 1511510

Current hierarchy: **Curtis  Francis → Creek River Mining Inc → No 1 Plant**

- 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:** Moses  Case → No 1 Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Case Coal Company → No 1 Plant; 1978-08-01 to 1980-01-17; source msha-controller-operator-history
- **controller_controls_operator:** Moses  Case → Case Coal Company; 1978-08-01 to 1980-01-17; source msha-controller-operator-history
- **controller_controls_mine:** Randall  Pridemore et al → No 1 Plant; 1980-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Case Carbon Mining Company Inc → No 1 Plant; 1980-01-18 to 1981-10-15; source msha-controller-operator-history
- **controller_controls_operator:** Randall  Pridemore et al → Case Carbon Mining Company Inc; 1980-01-18 to 1981-10-15; source msha-controller-operator-history
- **controller_controls_operator:** Dan P  James et al → Case Carbon Mining Company Inc; 1980-01-18 to 1981-10-15; source msha-controller-operator-history
- **operator_operates_mine:** Case Mining Inc → No 1 Plant; 1981-10-16 to 1996-05-21; source msha-controller-operator-history
- **controller_controls_mine:** Moses  Case → No 1 Plant; 1981-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Moses  Case → Case Mining Inc; 1981-10-16 to 1996-05-21; source msha-controller-operator-history
- **operator_operates_mine:** Creek River Mining Inc → No 1 Plant; 1996-05-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Curtis  Francis → No 1 Plant; 1996-05-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Curtis  Francis → Creek River Mining Inc; 1996-05-22 to current/open; source msha-controller-operator-history