# Relationship history for MSHA mine 1517311

Current hierarchy: **Greg  Olinger → Kentucky United Coal Llc → Ku #1**

- 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:** Anthony V  Lanham → Ku #1; 1991-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lanham Mining Company Inc → Ku #1; 1992-10-01 to 1999-10-31; source msha-controller-operator-history
- **controller_controls_operator:** Anthony V  Lanham → Lanham Mining Company Inc; 1992-10-01 to 1999-10-31; source msha-controller-operator-history
- **operator_operates_mine:** Kentucky United Coal Llc → Ku #1; 1999-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Greg  Olinger → Ku #1; 1999-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Greg  Olinger → Kentucky United Coal Llc; 1999-11-01 to current/open; source msha-controller-operator-history