# Relationship history for MSHA mine 0101415

Current hierarchy: **Southeastern Metallurgical Coal Company Inc → Brenda Coal Company Inc → Brenda Strip No 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:** Welch Lester Sr → Brenda Strip No 1; 1975-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Brown Brothers Grading Company → Brenda Strip No 1; 1975-10-01 to 1976-05-10; source msha-controller-operator-history
- **controller_controls_mine:** Brown Boyce & J E → Brenda Strip No 1; 1975-10-01 to 1976-05-10; source msha-controller-operator-history
- **controller_controls_operator:** Brown Boyce & J E → Brown Brothers Grading Company; 1975-10-01 to 1976-05-10; source msha-controller-operator-history
- **operator_operates_mine:** Kay Fabe Coal Co → Brenda Strip No 1; 1976-05-11 to 1976-10-23; source msha-controller-operator-history
- **controller_controls_operator:** Welch Lester Sr → Kay Fabe Coal Co; 1976-05-11 to 1976-10-23; source msha-controller-operator-history
- **operator_operates_mine:** Brenda Coal Company Inc → Brenda Strip No 1; 1976-10-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Southeastern Metallurgical Coal Company Inc → Brenda Strip No 1; 1976-10-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Southeastern Metallurgical Coal Company Inc → Brenda Coal Company Inc; 1976-10-24 to current/open; source msha-controller-operator-history