# Relationship history for MSHA mine 0600782

Current hierarchy: **Eric J  Ellingson → M & R Trucking and Excavation LLC → Corson 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:** M & R Trucking and Excavation LLC → Corson Pit; 2013-10-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Eric J  Ellingson → Corson Pit; 2013-10-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eric J  Ellingson → M & R Trucking and Excavation LLC; 2013-10-18 to current/open; source msha-controller-operator-history