# Relationship history for MSHA mine 0102844

Current hierarchy: **Beau D  Greer → Mica Minerals Mining LLC → Mica Minerals Mining LLC**

- 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

- **operator_operates_mine:** Coosa Mining Ltd → Mica Minerals Mining LLC; 1989-12-01 to 2008-06-24; source msha-controller-operator-history
- **controller_controls_mine:** O'Dell Construction Company & Callahan Mining Corp → Mica Minerals Mining LLC; 1989-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** O'Dell Construction Company & Callahan Mining Corp → Coosa Mining Ltd; 1989-12-01 to 2008-06-24; source msha-controller-operator-history
- **operator_operates_mine:** Mica Minerals Mining LLC → Mica Minerals Mining LLC; 2008-06-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Beau D  Greer et al → Mica Minerals Mining LLC; 2008-06-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Beau D  Greer et al → Mica Minerals Mining LLC; 2008-06-25 to current/open; source msha-controller-operator-history