# Relationship history for MSHA mine 1515272

Current hierarchy: **Noe James David & Kenneth D Haynes → Mega Mining Company Inc → #1 Mine**

- 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:** Seals Cecil → #1 Mine; 1982-08-27 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cecil & Bob Coal Company Inc → #1 Mine; 1985-07-01 to 1987-09-27; source msha-controller-operator-history
- **controller_controls_operator:** Seals Cecil → Cecil & Bob Coal Company Inc; 1985-07-01 to 1987-09-27; source msha-controller-operator-history
- **operator_operates_mine:** Mega Mining Company Inc → #1 Mine; 1987-09-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Noe James David & Kenneth D Haynes → #1 Mine; 1987-09-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Noe James David & Kenneth D Haynes → Mega Mining Company Inc; 1987-09-28 to current/open; source msha-controller-operator-history