# Relationship history for MSHA mine 1202305

Current hierarchy: **White Stallion Energy → Vigo Coal OperatingCompany, Inc → Range Line 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:** Vigo Coal Company Incorporated → Range Line Mine; 1985-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Vigo Coal Company, Inc → Range Line Mine; 2001-03-01 to 2005-06-07; source msha-controller-operator-history
- **controller_controls_operator:** Vigo Coal Company Incorporated → Vigo Coal Company, Inc; 2001-03-01 to 2005-06-07; source msha-controller-operator-history
- **operator_operates_mine:** Vigo Coal OperatingCompany, Inc → Range Line Mine; 2005-06-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Vigo Coal Company Incorporated → Range Line Mine; 2005-06-08 to 2016-05-04; source msha-controller-operator-history
- **controller_controls_operator:** Vigo Coal Company Incorporated → Vigo Coal OperatingCompany, Inc; 2005-06-08 to 2016-05-04; source msha-controller-operator-history
- **controller_controls_mine:** White Stallion Energy → Range Line Mine; 2016-05-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** White Stallion Energy → Vigo Coal OperatingCompany, Inc; 2016-05-05 to current/open; source msha-controller-operator-history