# Relationship history for MSHA mine 1202476

Current hierarchy: **Dawn  Littleton → L & L Bulk Materials → Plant #3**

- 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:** Dawn  Littleton → Plant #3; 2013-04-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** L & L Bulk Materials → Plant #3; 2016-07-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dawn  Littleton → L & L Bulk Materials; 2016-07-28 to current/open; source msha-controller-operator-history