# Relationship history for MSHA mine 3003170

Current hierarchy: **Michael  Vitale; Paul  Vitale → Vitale Ready Mix Concrete Inc. → Locke Rd Groton 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Mitchell S  Metzgar → Locke Rd Groton Pit; 1987-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hannah L  Robinson → Locke Rd Groton Pit; 1988-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lewbro Ready-Mix Inc → Locke Rd Groton Pit; 1996-06-01 to 2007-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Mitchell S  Metzgar → Lewbro Ready-Mix Inc; 1996-06-01 to 2007-07-31; source msha-controller-operator-history
- **operator_operates_mine:** H L Robinson Sand & Gravel Inc → Locke Rd Groton Pit; 2007-08-01 to 2013-05-08; source msha-controller-operator-history
- **controller_controls_operator:** Hannah L  Robinson → H L Robinson Sand & Gravel Inc; 2007-08-01 to 2013-05-08; source msha-controller-operator-history
- **controller_controls_mine:** Michael  Vitale et al → Locke Rd Groton Pit; 2012-12-14 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** RMC Group LLC → Locke Rd Groton Pit; 2013-05-09 to 2018-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Paul  Vitale et al → Locke Rd Groton Pit; 2013-05-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Paul  Vitale et al → RMC Group LLC; 2013-05-09 to 2018-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Vitale et al → RMC Group LLC; 2013-05-09 to 2018-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Vitale Ready Mix Concrete Inc. → Locke Rd Groton Pit; 2019-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Vitale et al → Vitale Ready Mix Concrete Inc.; 2019-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Paul  Vitale et al → Vitale Ready Mix Concrete Inc.; 2019-01-01 to current/open; source msha-controller-operator-history