# Relationship history for MSHA mine 0504984

Current hierarchy: **Lawrence J  O'Connor → St Sophia Holding Ltd → Lower Mountain Top**

- 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:** St Sophia Holding Ltd → Lower Mountain Top; 2011-05-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lawrence J  O'Connor → Lower Mountain Top; 2011-05-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lawrence J  O'Connor → St Sophia Holding Ltd; 2011-05-17 to current/open; source msha-controller-operator-history