# Relationship history for MSHA mine 1517928

Current hierarchy: **Iracoal Incorporated → Lodestar Energy Inc → Shop Branch Mine**

- 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

- **controller_controls_mine:** Iracoal Incorporated → Shop Branch Mine; 1997-01-31 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lodestar Energy Inc → Shop Branch Mine; 1997-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Iracoal Incorporated → Lodestar Energy Inc; 1997-04-01 to current/open; source msha-controller-operator-history