# Relationship history for MSHA mine 1518574

Current hierarchy: **Michael S  Branham → Metelectric LLC → No 2**

- 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:** The Raven Company, Inc. → No 2; 2002-10-01 to 2012-09-19; source msha-controller-operator-history
- **controller_controls_mine:** Nancy A  Cybulla-Johnson → No 2; 2002-10-01 to 2011-01-19; source msha-controller-operator-history
- **controller_controls_operator:** Nancy A  Cybulla-Johnson → The Raven Company, Inc.; 2002-10-01 to 2011-01-19; source msha-controller-operator-history
- **controller_controls_mine:** Michael S  Branham → No 2; 2010-04-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Greg  Evans → No 2; 2011-01-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Greg  Evans → The Raven Company, Inc.; 2011-01-20 to 2012-09-19; source msha-controller-operator-history
- **operator_operates_mine:** Metelectric LLC → No 2; 2012-09-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael S  Branham → Metelectric LLC; 2012-09-20 to current/open; source msha-controller-operator-history