# Relationship history for MSHA mine 3304357

Current hierarchy: **David L  King; Randy R  King → KING QUARRIES INC → KING QUARRIES INCORPORATED**

- 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:** King Quarries Inc → KING QUARRIES INCORPORATED; 1995-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mary  King → KING QUARRIES INCORPORATED; 1995-07-01 to 2019-07-22; source msha-controller-operator-history
- **controller_controls_operator:** Mary  King → King Quarries Inc; 1995-07-01 to 2019-07-22; source msha-controller-operator-history
- **controller_controls_mine:** Randy R  King et al → KING QUARRIES INCORPORATED; 2019-07-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randy R  King et al → King Quarries Inc; 2019-07-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David L  King et al → King Quarries Inc; 2019-07-23 to current/open; source msha-controller-operator-history