# Relationship history for MSHA mine 4104642

Current hierarchy: **David  Rollen; Jon  Dyck → Hill Country Quarry Investments, LLC → Rock Solid Stone Quarry**

- 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 Solid Stone Quarry LLC → Rock Solid Stone Quarry; 2006-10-17 to 2009-07-12; source msha-controller-operator-history
- **controller_controls_mine:** Jason  Greeley et al → Rock Solid Stone Quarry; 2006-10-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jason  Greeley et al → Rock Solid Stone Quarry LLC; 2006-10-17 to 2009-07-12; source msha-controller-operator-history
- **controller_controls_operator:** Robert L  McIntyre et al → Rock Solid Stone Quarry LLC; 2006-10-17 to 2009-07-12; source msha-controller-operator-history
- **operator_operates_mine:** RS Materials Group, LLC → Rock Solid Stone Quarry; 2009-07-13 to 2019-04-28; source msha-controller-operator-history
- **controller_controls_mine:** Jon  Dyck → Rock Solid Stone Quarry; 2009-07-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jon  Dyck → RS Materials Group, LLC; 2009-07-13 to 2019-04-28; source msha-controller-operator-history
- **operator_operates_mine:** Hill Country Quarry Investments, LLC → Rock Solid Stone Quarry; 2019-04-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jon  Dyck et al → Rock Solid Stone Quarry; 2019-04-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jon  Dyck et al → Hill Country Quarry Investments, LLC; 2019-04-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David  Rollen et al → Hill Country Quarry Investments, LLC; 2019-04-29 to current/open; source msha-controller-operator-history