# Relationship history for MSHA mine 1601316

Current hierarchy: **Holland Verl → Goober Pit → GOOBER PIT #2**

- 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:** Holland Verl → GOOBER PIT #2; 1991-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Goober Pit → GOOBER PIT #2; 1997-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Holland Verl → Goober Pit; 1997-06-01 to current/open; source msha-controller-operator-history