# Relationship history for MSHA mine 4607211

Current hierarchy: **Sayre Keith B → Eastern Energy Investments Inccorporated → Jannet Mine (S)**

- 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

- **operator_operates_mine:** Eastern Energy Investments Inc → Jannet Mine (S); 1986-10-01 to 1988-02-03; source msha-controller-operator-history
- **controller_controls_mine:** Keenan Darrell R → Jannet Mine (S); 1986-10-01 to 1988-02-03; source msha-controller-operator-history
- **controller_controls_operator:** Keenan Darrell R → Eastern Energy Investments Inc; 1986-10-01 to 1988-02-03; source msha-controller-operator-history
- **controller_controls_mine:** Sayre Keith B → Jannet Mine (S); 1987-12-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Eastern Energy Investments Inccorporated → Jannet Mine (S); 1988-02-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sayre Keith B → Eastern Energy Investments Inccorporated; 1988-02-04 to current/open; source msha-controller-operator-history