# Relationship history for MSHA mine 4607583

Current hierarchy: **Rogers Micca → H E L Coals Inc → Crane Creek #1**

- 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:** Fredrick Tony → Crane Creek #1; 1987-10-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rogers Micca → Crane Creek #1; 1988-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pandex Corp → Crane Creek #1; 1988-09-01 to 1988-09-26; source msha-controller-operator-history
- **controller_controls_operator:** Fredrick Tony → Pandex Corp; 1988-09-01 to 1988-09-26; source msha-controller-operator-history
- **operator_operates_mine:** H E L Coals Inc → Crane Creek #1; 1988-09-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rogers Micca → H E L Coals Inc; 1988-09-27 to current/open; source msha-controller-operator-history