# Relationship history for MSHA mine 1502129

Current hierarchy: **Alliance Resource Partners LP → Rough Creek Mining, LLC → Hamilton 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

- **operator_operates_mine:** Island Creek Coal Company → Hamilton 1; 1950-01-01 to 1993-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Occidental Petroleum Corp → Hamilton 1; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Occidental Petroleum Corp → Island Creek Coal Company; 1950-01-01 to 1993-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Island Creek Coal Company → Hamilton 1; 1993-07-01 to 2015-06-25; source msha-controller-operator-history
- **controller_controls_mine:** CONSOL Energy Inc → Hamilton 1; 1993-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CONSOL Energy Inc → Island Creek Coal Company; 1993-07-01 to 2015-06-25; source msha-controller-operator-history
- **controller_controls_mine:** Alliance Resource Partners LP → Hamilton 1; 2015-02-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Rough Creek Mining, LLC → Hamilton 1; 2015-06-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alliance Resource Partners LP → Rough Creek Mining, LLC; 2015-06-26 to current/open; source msha-controller-operator-history