# Relationship history for MSHA mine 1512353

Current hierarchy: **Brock Jerry W & Larry Lane → Brock & Lane Coal Company 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:** Jimmy  Blanton → No 1; 1973-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Kentucky Harlan Coal Company Inc → No 1; 1980-06-01 to 1984-01-15; source msha-controller-operator-history
- **controller_controls_operator:** Jimmy  Blanton → Kentucky Harlan Coal Company Inc; 1980-06-01 to 1984-01-15; source msha-controller-operator-history
- **controller_controls_mine:** Tony Carlis  Mahon → No 1; 1983-09-13 to 1984-10-21; source msha-controller-operator-history
- **operator_operates_mine:** Carl-Stan Enterprises Inc → No 1; 1984-01-16 to 1984-07-29; source msha-controller-operator-history
- **controller_controls_operator:** Tony Carlis  Mahon → Carl-Stan Enterprises Inc; 1984-01-16 to 1984-07-29; source msha-controller-operator-history
- **operator_operates_mine:** Brock & Lane Coal Company Inc → No 1; 1984-07-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brock Jerry W & Larry Lane → No 1; 1984-07-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brock Jerry W & Larry Lane → Brock & Lane Coal Company Inc; 1984-07-30 to current/open; source msha-controller-operator-history