# Relationship history for MSHA mine 1511186

Current hierarchy: **Joseph Brothers Inc → Joseph Brothers Inc → No 3**

- 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:** Michael K  Cook et al → No 3; 1975-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Howell Corporation → No 3; 1977-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Joseph Brothers Inc → No 3; 1978-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Knight Coal Company Inc → No 3; 1978-03-01 to 1980-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Michaels Robert K → No 3; 1978-03-01 to 1980-04-06; source msha-controller-operator-history
- **controller_controls_operator:** Michaels Robert K → Knight Coal Company Inc; 1978-03-01 to 1980-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Cesco Coal Company Inc → No 3; 1980-04-01 to 1981-02-08; source msha-controller-operator-history
- **controller_controls_operator:** Michael K  Cook et al → Cesco Coal Company Inc; 1980-04-01 to 1981-02-08; source msha-controller-operator-history
- **controller_controls_operator:** Randy A  Cook et al → Cesco Coal Company Inc; 1980-04-01 to 1981-02-08; source msha-controller-operator-history
- **operator_operates_mine:** Lake Coal Company Inc → No 3; 1981-02-09 to 1981-06-25; source msha-controller-operator-history
- **controller_controls_operator:** Howell Corporation → Lake Coal Company Inc; 1981-02-09 to 1981-06-25; source msha-controller-operator-history
- **operator_operates_mine:** Joseph Brothers Inc → No 3; 1981-06-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joseph Brothers Inc → Joseph Brothers Inc; 1981-06-26 to current/open; source msha-controller-operator-history