# Relationship history for MSHA mine 4501090

Current hierarchy: **West Jim Sr → Jim West Inc → Jim West Incorporated**

- 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:** West Jim Sr → Jim West Incorporated; 1979-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Jim West Inc → Jim West Incorporated; 1980-07-01 to 1981-12-14; source msha-controller-operator-history
- **controller_controls_operator:** West Jim Sr → Jim West Inc; 1980-07-01 to 1981-12-14; source msha-controller-operator-history
- **operator_operates_mine:** Merrell & Ring → Jim West Incorporated; 1981-12-15 to 1982-12-06; source msha-controller-operator-history
- **controller_controls_mine:** Merrill & Ring → Jim West Incorporated; 1981-12-15 to 1982-12-06; source msha-controller-operator-history
- **controller_controls_operator:** Merrill & Ring → Merrell & Ring; 1981-12-15 to 1982-12-06; source msha-controller-operator-history
- **operator_operates_mine:** Jim West Inc → Jim West Incorporated; 1982-12-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** West Jim Sr → Jim West Inc; 1982-12-07 to current/open; source msha-controller-operator-history