# Relationship history for MSHA mine 3304685

Current hierarchy: **Benjamin  Geddis; Steve R  Oliver → Cornerstone Crushing, LLC → Wood 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

- **controller_controls_mine:** Daniel R  Hawbaker  et al → Wood Quarry; 1983-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Glenn O. Hawbaker, Inc. → Wood Quarry; 2012-07-24 to 2014-10-15; source msha-controller-operator-history
- **controller_controls_operator:** Daniel R  Hawbaker  et al → Glenn O. Hawbaker, Inc.; 2012-07-24 to 2014-10-15; source msha-controller-operator-history
- **operator_operates_mine:** Growers Choice LTD → Wood Quarry; 2014-10-16 to 2021-06-08; source msha-controller-operator-history
- **controller_controls_mine:** Charles R  Wood → Wood Quarry; 2014-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles R  Wood → Growers Choice LTD; 2014-10-16 to 2021-06-08; source msha-controller-operator-history
- **controller_controls_mine:** Steve R  Oliver et al → Wood Quarry; 2017-02-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cornerstone Crushing, LLC → Wood Quarry; 2021-06-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steve R  Oliver et al → Cornerstone Crushing, LLC; 2021-06-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Benjamin  Geddis et al → Cornerstone Crushing, LLC; 2021-06-09 to current/open; source msha-controller-operator-history