# Relationship history for MSHA mine 2902339

Current hierarchy: **William  Noyes; Tom  Fitzgerald → Wild Horse Development Corp → York Ranch Pit**

- 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:** Wild Horse Development Corp → York Ranch Pit; 2007-04-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Tom  Fitzgerald et al → York Ranch Pit; 2007-04-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tom  Fitzgerald et al → Wild Horse Development Corp; 2007-04-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William  Noyes et al → Wild Horse Development Corp; 2007-04-15 to current/open; source msha-controller-operator-history