# Relationship history for MSHA mine 0405834

Current hierarchy: **Neal L  Grabowski; Michael J  Grabowski → Upland Rock → S-6 Red**

- 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:** Upland Rock, Inc. → S-6 Red; 2011-11-16 to 2012-07-16; source msha-controller-operator-history
- **controller_controls_mine:** Mile  Grbic et al → S-6 Red; 2011-11-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mile  Grbic et al → Upland Rock, Inc.; 2011-11-16 to 2012-07-16; source msha-controller-operator-history
- **controller_controls_operator:** Neal L  Grabowski et al → Upland Rock, Inc.; 2011-11-16 to 2012-07-16; source msha-controller-operator-history
- **controller_controls_mine:** Michael J  Grabowski et al → S-6 Red; 2012-06-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Upland Rock → S-6 Red; 2012-07-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael J  Grabowski et al → Upland Rock; 2012-07-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Neal L  Grabowski et al → Upland Rock; 2012-07-17 to current/open; source msha-controller-operator-history