# Relationship history for MSHA mine 4405505

Current hierarchy: **Bailey Toby & Teddy → Bird Coal Company Inc → Mine #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

- **operator_operates_mine:** Bird Coal Company Inc → Mine #1; 1980-09-01 to 1982-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Fleming William Lewis & Edward--John Jordan → Mine #1; 1980-09-01 to 1982-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Fleming William Lewis & Edward--John Jordan → Bird Coal Company Inc; 1980-09-01 to 1982-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Bird Coal Company Inc → Mine #1; 1982-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bailey Toby & Teddy Et Al → Mine #1; 1982-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bailey Toby & Teddy Et Al → Bird Coal Company Inc; 1982-10-01 to current/open; source msha-controller-operator-history