# Relationship history for MSHA mine 1513209

Current hierarchy: **Johns Barry → Wilgar Land Company → 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:** Tackett Rodney → No 1; 1980-09-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Flanary Lucas → No 1; 1981-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** B R T Collieries Inc → No 1; 1981-11-01 to 1984-04-08; source msha-controller-operator-history
- **controller_controls_operator:** Tackett Rodney → B R T Collieries Inc; 1981-11-01 to 1984-04-08; source msha-controller-operator-history
- **operator_operates_mine:** Little Beaver Corp → No 1; 1984-04-09 to 1984-06-14; source msha-controller-operator-history
- **controller_controls_operator:** Flanary Lucas → Little Beaver Corp; 1984-04-09 to 1984-06-14; source msha-controller-operator-history
- **operator_operates_mine:** Wilgar Land Company → No 1; 1984-06-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Johns Barry Et Al → No 1; 1984-06-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Johns Barry Et Al → Wilgar Land Company; 1984-06-15 to current/open; source msha-controller-operator-history