# Relationship history for MSHA mine 0404569

Current hierarchy: **Parrott James D → James D Parrott Mining & Timber Company → Silver Falls**

- 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:** Bonn Thomas S → Silver Falls; 1980-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Natural Energy Resources Inc → Silver Falls; 1982-02-01 to 1983-07-27; source msha-controller-operator-history
- **controller_controls_operator:** Bonn Thomas S → Natural Energy Resources Inc; 1982-02-01 to 1983-07-27; source msha-controller-operator-history
- **operator_operates_mine:** James D Parrott Mining & Timber Company → Silver Falls; 1983-07-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Parrott James D → Silver Falls; 1983-07-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Parrott James D → James D Parrott Mining & Timber Company; 1983-07-28 to current/open; source msha-controller-operator-history