# Relationship history for MSHA mine 1515073

Current hierarchy: **Crace Paris → Amy Coal 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:** Meade Muncie Jr → No 1; 1982-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** M & M Extraction Inc → No 1; 1985-02-01 to 1987-01-05; source msha-controller-operator-history
- **controller_controls_operator:** Meade Muncie Jr → M & M Extraction Inc; 1985-02-01 to 1987-01-05; source msha-controller-operator-history
- **controller_controls_mine:** Shortridge Keaster Et Al → No 1; 1985-06-28 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Black Hole Mining Of Old Kentucky Inc → No 1; 1987-01-06 to 1987-04-06; source msha-controller-operator-history
- **controller_controls_operator:** Shortridge Keaster Et Al → Black Hole Mining Of Old Kentucky Inc; 1987-01-06 to 1987-04-06; source msha-controller-operator-history
- **operator_operates_mine:** Amy Coal Inc → No 1; 1987-04-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Crace Paris → No 1; 1987-04-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Crace Paris → Amy Coal Inc; 1987-04-07 to current/open; source msha-controller-operator-history