# Relationship history for MSHA mine 2302187

Current hierarchy: **Andrew  Peterson; Curtis  Virtue; Danny  Shannon → Grove Rock Quarry, LLC → PORTABLE #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:** Rock Quarries LLC → PORTABLE #1; 1999-06-01 to 2011-02-22; source msha-controller-operator-history
- **controller_controls_mine:** Tony  Courtney → PORTABLE #1; 1999-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tony  Courtney → Rock Quarries LLC; 1999-06-01 to 2011-02-22; source msha-controller-operator-history
- **operator_operates_mine:** F/H Construction & Rock Quarries, Inc. → PORTABLE #1; 2011-02-23 to 2014-10-26; source msha-controller-operator-history
- **controller_controls_mine:** Cheri  Foster et al → PORTABLE #1; 2011-02-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cheri  Foster et al → F/H Construction & Rock Quarries, Inc.; 2011-02-23 to 2014-10-26; source msha-controller-operator-history
- **controller_controls_operator:** Devon  Foster et al → F/H Construction & Rock Quarries, Inc.; 2011-02-23 to 2014-10-26; source msha-controller-operator-history
- **operator_operates_mine:** Grove Rock Quarry, LLC → PORTABLE #1; 2014-10-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Danny  Shannon et al → PORTABLE #1; 2014-10-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Danny  Shannon et al → Grove Rock Quarry, LLC; 2014-10-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Andrew  Peterson et al → Grove Rock Quarry, LLC; 2014-10-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Curtis  Virtue et al → Grove Rock Quarry, LLC; 2014-10-27 to current/open; source msha-controller-operator-history