# Relationship history for MSHA mine 3606547

Current hierarchy: **Jordan Benjamin F → Jordan Coal Company → Jordon Strip**

- 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:** Jordan Coal Company → Jordon Strip; 1977-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jordan Benjamin F → Jordon Strip; 1977-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jordan Benjamin F → Jordan Coal Company; 1977-10-01 to current/open; source msha-controller-operator-history