# Relationship history for MSHA mine 1502132

Current hierarchy: **Alliance Resource Partners LP → Webster County Coal LLC → Dotiki 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Webster County Coal Corp → Dotiki Mine; 1950-01-01 to 1996-09-08; source msha-controller-operator-history
- **controller_controls_mine:** MAPCO Inc → Dotiki Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** MAPCO Inc → Webster County Coal Corp; 1950-01-01 to 1996-09-08; source msha-controller-operator-history
- **operator_operates_mine:** Webster County Coal LLC → Dotiki Mine; 1996-09-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Alliance Resource Partners LP → Dotiki Mine; 1996-09-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alliance Resource Partners LP → Webster County Coal LLC; 1996-09-09 to current/open; source msha-controller-operator-history