# Relationship history for MSHA mine 1800149

Current hierarchy: **Wes Pac Energy & Consolidated Energy → Western America Coal Company → No 1 Strip**

- 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:** Ginniman Coal Company → No 1 Strip; 1950-01-01 to 1977-06-18; source msha-controller-operator-history
- **controller_controls_mine:** Ginniman Coal Company → No 1 Strip; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ginniman Coal Company → Ginniman Coal Company; 1950-01-01 to 1977-06-18; source msha-controller-operator-history
- **operator_operates_mine:** R A K Coal Company Inc → No 1 Strip; 1977-06-19 to 1977-09-26; source msha-controller-operator-history
- **controller_controls_mine:** Kathary Robert A → No 1 Strip; 1977-06-19 to 1977-09-26; source msha-controller-operator-history
- **controller_controls_operator:** Kathary Robert A → R A K Coal Company Inc; 1977-06-19 to 1977-09-26; source msha-controller-operator-history
- **operator_operates_mine:** Western America Coal Company → No 1 Strip; 1977-09-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Wes Pac Energy & Consolidated Energy → No 1 Strip; 1977-09-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wes Pac Energy & Consolidated Energy → Western America Coal Company; 1977-09-27 to current/open; source msha-controller-operator-history