# Relationship history for MSHA mine 1505130

Current hierarchy: **Justice James R → Black Chip Coal Company Inc → No 1 Surface**

- 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:** Shelby Fuel Corp → No 1 Surface; 1972-02-01 to 1979-06-26; source msha-controller-operator-history
- **controller_controls_mine:** Goff Sammy → No 1 Surface; 1972-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Goff Sammy → Shelby Fuel Corp; 1972-02-01 to 1979-06-26; source msha-controller-operator-history
- **operator_operates_mine:** Black Chip Coal Company Inc → No 1 Surface; 1979-06-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Justice James R → No 1 Surface; 1979-06-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Justice James R → Black Chip Coal Company Inc; 1979-06-27 to current/open; source msha-controller-operator-history