# Relationship history for MSHA mine 3102010

Current hierarchy: **Joshua H  Boone → Boone's Woodlawn Quarry,LLC → Woodlawn 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

- **controller_controls_mine:** C E  Boone → Woodlawn Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Explosives Supply Company Inc → Woodlawn Quarry; 1987-09-01 to 2014-12-31; source msha-controller-operator-history
- **controller_controls_operator:** C E  Boone → Explosives Supply Company Inc; 1987-09-01 to 2014-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Boone's Woodlawn Quarry,LLC → Woodlawn Quarry; 2015-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Joshua H  Boone et al → Woodlawn Quarry; 2015-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joshua H  Boone et al → Boone's Woodlawn Quarry,LLC; 2015-01-01 to current/open; source msha-controller-operator-history