# Relationship history for MSHA mine 3401983

Current hierarchy: **John M  Mayfield; James M  Schwarz → Western Aggregates, LLC → Bally Mountain Quarry**

- 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:** V J Stone LLC → Bally Mountain Quarry; 2005-12-01 to 2011-05-06; source msha-controller-operator-history
- **controller_controls_mine:** John  Vance → Bally Mountain Quarry; 2005-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Vance → V J Stone LLC; 2005-12-01 to 2011-05-06; source msha-controller-operator-history
- **operator_operates_mine:** Western Aggregates, LLC → Bally Mountain Quarry; 2011-05-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James M  Schwarz et al → Bally Mountain Quarry; 2011-05-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James M  Schwarz et al → Western Aggregates, LLC; 2011-05-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John M  Mayfield et al → Western Aggregates, LLC; 2011-05-07 to current/open; source msha-controller-operator-history