# Relationship history for MSHA mine 1401703

Current hierarchy: **Robert I  Hartley; James  Brakefield → Phoenix Mining Company, Inc. → Drywood**

- 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:** Robert I  Hartley et al → Drywood; 1993-11-22 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Phoenix Mining Company, Inc. → Drywood; 2009-05-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert I  Hartley et al → Phoenix Mining Company, Inc.; 2009-05-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  Brakefield et al → Phoenix Mining Company, Inc.; 2009-05-08 to current/open; source msha-controller-operator-history