# Relationship history for MSHA mine 1510607

Current hierarchy: **Donnie T  Hoskins → Trent Coal Company → No 2 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:** Donnie T  Hoskins et al → No 2 Mine; 1977-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Daniels Coal Company → No 2 Mine; 1977-08-01 to 1978-03-15; source msha-controller-operator-history
- **controller_controls_mine:** Daniels Boyd → No 2 Mine; 1977-08-01 to 1978-03-15; source msha-controller-operator-history
- **controller_controls_operator:** Daniels Boyd → Daniels Coal Company; 1977-08-01 to 1978-03-15; source msha-controller-operator-history
- **operator_operates_mine:** Trent Coal Company → No 2 Mine; 1978-03-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Donnie T  Hoskins et al → Trent Coal Company; 1978-03-16 to current/open; source msha-controller-operator-history