# Relationship history for MSHA mine 3800609

Current hierarchy: **Ashland Inc → Apac-Carolina Inc → Rains 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:** Ashland Inc → Rains Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ocean Lakes Construction Inc → Rains Mine; 1986-04-01 to 1993-05-06; source msha-controller-operator-history
- **controller_controls_mine:** Jackson Nelson Ii → Rains Mine; 1986-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jackson Nelson Ii → Ocean Lakes Construction Inc; 1986-04-01 to 1993-05-06; source msha-controller-operator-history
- **operator_operates_mine:** Apac-Carolina Inc → Rains Mine; 1993-05-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ashland Inc → Apac-Carolina Inc; 1993-05-07 to current/open; source msha-controller-operator-history