# Relationship history for MSHA mine 0405093

Current hierarchy: **Colin  Weyrick; Candy  Weyrick → Weyrick Companies → MUNARI 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

- **operator_operates_mine:** Weyrick Companies → MUNARI PIT; 1990-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Candy  Weyrick et al → MUNARI PIT; 1990-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Candy  Weyrick et al → Weyrick Companies; 1990-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Colin  Weyrick et al → Weyrick Companies; 1990-05-01 to current/open; source msha-controller-operator-history