# Relationship history for MSHA mine 4607364

Current hierarchy: **Sayre Keith B → Eastern Energy Investments Inccorporated → Mine No 101 (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:** Keenan Darrell R → Mine No 101 (1); 1986-10-01 to 1988-02-03; source msha-controller-operator-history
- **operator_operates_mine:** Eastern Energy Investments Inc → Mine No 101 (1); 1987-09-01 to 1987-12-15; source msha-controller-operator-history
- **controller_controls_operator:** Keenan Darrell R → Eastern Energy Investments Inc; 1987-09-01 to 1987-12-15; source msha-controller-operator-history
- **operator_operates_mine:** Eastern Energy Investments Inccorporated → Mine No 101 (1); 1987-12-16 to 1992-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Sayre Keith B → Mine No 101 (1); 1987-12-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sayre Keith B → Eastern Energy Investments Inccorporated; 1987-12-16 to 1992-10-31; source msha-controller-operator-history
- **operator_operates_mine:** Diamond Kit Mining Company Inc → Mine No 101 (1); 1992-11-01 to 1993-02-09; source msha-controller-operator-history
- **controller_controls_mine:** Allied Resources Corp → Mine No 101 (1); 1992-11-01 to 1993-02-09; source msha-controller-operator-history
- **controller_controls_operator:** Allied Resources Corp → Diamond Kit Mining Company Inc; 1992-11-01 to 1993-02-09; source msha-controller-operator-history
- **operator_operates_mine:** Eastern Energy Investments Inccorporated → Mine No 101 (1); 1993-02-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sayre Keith B → Eastern Energy Investments Inccorporated; 1993-02-10 to current/open; source msha-controller-operator-history