# Relationship history for MSHA mine 4105055

Current hierarchy: **Vic A  Bownds; Cathy  Bownds → ROBERT MCHAM LTD → ENERVEST MABEE 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Vic A  Bownds et al → ENERVEST MABEE PIT; 2005-02-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** ROBERT MCHAM LTD → ENERVEST MABEE PIT; 2014-02-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vic A  Bownds et al → ROBERT MCHAM LTD; 2014-02-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cathy  Bownds et al → ROBERT MCHAM LTD; 2014-02-19 to current/open; source msha-controller-operator-history