# Relationship history for MSHA mine 4607857

Current hierarchy: **Long Branch Energy Corporation → Long Branch Energy → Mine No 14**

- 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:** Long Branch Energy Corporation → Mine No 14; 1989-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Long Branch Energy → Mine No 14; 1990-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Long Branch Energy Corporation → Long Branch Energy; 1990-03-01 to current/open; source msha-controller-operator-history