# Relationship history for MSHA mine 2104037

Current hierarchy: **Andrew C Statema → Statema Backhoe Service LLC → Fletcher 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:** Statema Backhoe Service LLC → Fletcher Pit; 2022-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Andrew C Statema → Fletcher Pit; 2022-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Andrew C Statema → Statema Backhoe Service LLC; 2022-08-01 to current/open; source msha-controller-operator-history