# Relationship history for MSHA mine 5001713

Current hierarchy: **KARL S  POTTS; RUSSELL S  NELSON → Choggiung Ltd. → Dillingham Hard Rock Quarry**

- 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:** Choggiung Ltd. → Dillingham Hard Rock Quarry; 2001-09-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** KARL S  POTTS  ET AL → Dillingham Hard Rock Quarry; 2001-09-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** KARL S  POTTS  ET AL → Choggiung Ltd.; 2001-09-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** RUSSELL S  NELSON  ET AL → Choggiung Ltd.; 2001-09-28 to current/open; source msha-controller-operator-history