# Relationship history for MSHA mine 0801199

Current hierarchy: **Darryl C  Lanker → Bedrock Resources → CITRA 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

- **controller_controls_mine:** Darryl C  Lanker → CITRA MINE; 1986-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bedrock Resources → CITRA MINE; 1992-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Darryl C  Lanker → Bedrock Resources; 1992-07-01 to current/open; source msha-controller-operator-history