# Relationship history for MSHA mine 0405853

Current hierarchy: **T J  Lamb → Aggrecon LLC → Plant 1**

- 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:** Aggrecon LLC → Plant 1; 2012-08-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** T J  Lamb → Plant 1; 2012-08-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** T J  Lamb → Aggrecon LLC; 2012-08-06 to current/open; source msha-controller-operator-history