# Relationship history for MSHA mine 1102790

Current hierarchy: **Ashland Inc → Arch Of Illinois → Kathleen 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 et al → Kathleen Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Carter Coal Corp → Kathleen Mine; 1983-09-01 to 1987-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Williamson Harry → Kathleen Mine; 1983-09-01 to 1987-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Williamson Harry → Carter Coal Corp; 1983-09-01 to 1987-07-31; source msha-controller-operator-history
- **operator_operates_mine:** Arch Of Illinois → Kathleen Mine; 1987-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ashland Inc et al → Arch Of Illinois; 1987-08-01 to current/open; source msha-controller-operator-history