# Relationship history for MSHA mine 1200322

Current hierarchy: **RLF Chinook Properties LLC → RLF Chinook Properties, LLC → Clayvigo No. 1 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

- **operator_operates_mine:** Amax Coal Company → Clayvigo No. 1 Mine; 1950-01-01 to 1998-06-28; source msha-controller-operator-history
- **controller_controls_mine:** Cyprus Amax Minerals Company → Clayvigo No. 1 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cyprus Amax Minerals Company → Amax Coal Company; 1950-01-01 to 1998-06-28; source msha-controller-operator-history
- **operator_operates_mine:** Midwest Coal Company → Clayvigo No. 1 Mine; 1998-06-29 to 2004-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Horizon Natural Resources Incorporated → Clayvigo No. 1 Mine; 1998-06-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Horizon Natural Resources Incorporated → Midwest Coal Company; 1998-06-29 to 2004-09-30; source msha-controller-operator-history
- **operator_operates_mine:** LCC Indiana, LLC → Clayvigo No. 1 Mine; 2004-10-01 to 2006-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Lexington Coal Company LLC → Clayvigo No. 1 Mine; 2004-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lexington Coal Company LLC → LCC Indiana, LLC; 2004-10-01 to 2006-08-31; source msha-controller-operator-history
- **operator_operates_mine:** RLF Chinook Properties, LLC → Clayvigo No. 1 Mine; 2006-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** RLF Chinook Properties LLC → Clayvigo No. 1 Mine; 2006-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** RLF Chinook Properties LLC → RLF Chinook Properties, LLC; 2006-09-01 to current/open; source msha-controller-operator-history