# Relationship history for MSHA mine 0801229

Current hierarchy: **George  Thompson → Triple T Construction Products, LLC → ONEAL 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:** Martin Marietta Materials Inc → ONEAL QUARRY; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Luther M White Trust et al → ONEAL QUARRY; 1980-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** White Construction Company Inc → ONEAL QUARRY; 1994-04-01 to 2002-07-17; source msha-controller-operator-history
- **controller_controls_operator:** Luther M White Trust et al → White Construction Company Inc; 1994-04-01 to 2002-07-17; source msha-controller-operator-history
- **operator_operates_mine:** Martin Marietta Materials → ONEAL QUARRY; 2002-07-18 to 2006-07-09; source msha-controller-operator-history
- **controller_controls_operator:** Martin Marietta Materials Inc → Martin Marietta Materials; 2002-07-18 to 2006-07-09; source msha-controller-operator-history
- **operator_operates_mine:** Triple T Construction Products, LLC → ONEAL QUARRY; 2006-07-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** George  Thompson → ONEAL QUARRY; 2006-07-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** George  Thompson → Triple T Construction Products, LLC; 2006-07-10 to current/open; source msha-controller-operator-history