# Relationship history for MSHA mine 5002121

Current hierarchy: **Kris (Kristopher) J  Kelly; Hugo  Alfaro; Douglas C  Graham → HDK Mining Limited Liability Company → Willow**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** HDK Mining Limited Liability Company → Willow; 2026-05-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Douglas C  Graham et al → Willow; 2026-05-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Douglas C  Graham et al → HDK Mining Limited Liability Company; 2026-05-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hugo  Alfaro et al → HDK Mining Limited Liability Company; 2026-05-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kris (Kristopher) J  Kelly et al → HDK Mining Limited Liability Company; 2026-05-05 to current/open; source msha-controller-operator-history