# Relationship history for MSHA mine 1301042

Current hierarchy: **James W  Weaver → Welp & Mc Carten Inc → Casey Pit**

- 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:** James W  Weaver et al → Casey Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Welp & Mc Carten Inc → Casey Pit; 1950-01-01 to 1980-03-05; source msha-controller-operator-history
- **operator_operates_mine:** Welp & Mc Carten Inc → Casey Pit; 1979-12-01 to 1980-03-05; source msha-controller-operator-history
- **controller_controls_operator:** Welp & Mc Carten Inc → Welp & Mc Carten Inc; 1979-12-01 to 1980-03-05; source msha-controller-operator-history
- **operator_operates_mine:** Welp & Mc Carten Inc → Casey Pit; 1980-03-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James W  Weaver et al → Welp & Mc Carten Inc; 1980-03-06 to current/open; source msha-controller-operator-history