# Relationship history for MSHA mine 4801140

Current hierarchy: **Peterson Clayton → Falcon Concrete → Lathrop L-3 Pit**

- 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:** C J Abbott Inc → Lathrop L-3 Pit; 1978-03-09 to 1979-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Abbott Clifford E → Lathrop L-3 Pit; 1978-03-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Abbott Clifford E → C J Abbott Inc; 1978-03-09 to 1979-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Falcon Concrete → Lathrop L-3 Pit; 1979-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Peterson Clayton → Lathrop L-3 Pit; 1979-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peterson Clayton → Falcon Concrete; 1979-07-01 to current/open; source msha-controller-operator-history