# Relationship history for MSHA mine 4406276

Current hierarchy: **Cook Bobby → Brantar Mining Inc → Surface Mine No 2**

- 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:** Cook Bobby → Surface Mine No 2; 1984-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Sequoyah Resources Inc → Surface Mine No 2; 1986-02-01 to 1987-05-27; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth L  Stacy → Surface Mine No 2; 1986-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth L  Stacy → Sequoyah Resources Inc; 1986-02-01 to 1987-05-27; source msha-controller-operator-history
- **operator_operates_mine:** Brantar Mining Inc → Surface Mine No 2; 1987-05-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cook Bobby → Brantar Mining Inc; 1987-05-28 to current/open; source msha-controller-operator-history