# Relationship history for MSHA mine 3608598

Current hierarchy: **Ryan  Carter → CEI Anthracite → CEI Anthracite**

- 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:** Lang Filter Media → CEI Anthracite; 1996-12-01 to 2006-01-10; source msha-controller-operator-history
- **controller_controls_mine:** James  Durkin → CEI Anthracite; 1996-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  Durkin → Lang Filter Media; 1996-12-01 to 2006-01-10; source msha-controller-operator-history
- **operator_operates_mine:** CEI Anthracite → CEI Anthracite; 2006-01-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Richard  Ciminello  et al → CEI Anthracite; 2006-01-11 to 2021-01-20; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Ciminello  et al → CEI Anthracite; 2006-01-11 to 2021-01-20; source msha-controller-operator-history
- **controller_controls_mine:** Ryan  Carter → CEI Anthracite; 2021-01-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ryan  Carter → CEI Anthracite; 2021-01-21 to current/open; source msha-controller-operator-history