# Relationship history for MSHA mine 4606132

Current hierarchy: **Long Branch Energy Corporation → Long Branch Energy → Mine No 16**

- 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:** James F  Vance et al → Mine No 16; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Wise Mining Corp → Mine No 16; 1980-03-01 to 1984-04-03; source msha-controller-operator-history
- **controller_controls_operator:** James F  Vance et al → Wise Mining Corp; 1980-03-01 to 1984-04-03; source msha-controller-operator-history
- **controller_controls_operator:** Thurl D  Vance et al → Wise Mining Corp; 1980-03-01 to 1984-04-03; source msha-controller-operator-history
- **operator_operates_mine:** Augment Inc → Mine No 16; 1984-04-04 to 1989-04-23; source msha-controller-operator-history
- **controller_controls_mine:** Richard T  Hatfield et al → Mine No 16; 1984-04-04 to 1989-04-23; source msha-controller-operator-history
- **controller_controls_operator:** Richard T  Hatfield et al → Augment Inc; 1984-04-04 to 1989-04-23; source msha-controller-operator-history
- **controller_controls_mine:** Hanson PLC → Mine No 16; 1987-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Long Branch Energy Corporation → Mine No 16; 1989-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Eastern Associated Coal Corp → Mine No 16; 1989-04-24 to 1992-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Hanson PLC → Eastern Associated Coal Corp; 1989-04-24 to 1992-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Long Branch Energy → Mine No 16; 1992-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Long Branch Energy Corporation → Long Branch Energy; 1992-05-01 to current/open; source msha-controller-operator-history