# Relationship history for MSHA mine 3503264

Current hierarchy: **Charles S  Konen → Konen Rock Products Inc → Couse Creek 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:** Charles S  Konen → Couse Creek Quarry; 1986-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Konen Rock Products → Couse Creek Quarry; 1986-07-01 to 1991-07-09; source msha-controller-operator-history
- **controller_controls_operator:** Charles S  Konen → Konen Rock Products; 1986-07-01 to 1991-07-09; source msha-controller-operator-history
- **operator_operates_mine:** Konen Rock Crushing Inc → Couse Creek Quarry; 1991-07-10 to 1991-07-29; source msha-controller-operator-history
- **controller_controls_mine:** Thomas J  Konen → Couse Creek Quarry; 1991-07-10 to 2018-03-29; source msha-controller-operator-history
- **controller_controls_operator:** Thomas J  Konen → Konen Rock Crushing Inc; 1991-07-10 to 1991-07-29; source msha-controller-operator-history
- **operator_operates_mine:** Konen Rock Products Inc → Couse Creek Quarry; 1991-07-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles S  Konen → Konen Rock Products Inc; 1991-07-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** David M  Konen → Couse Creek Quarry; 2018-03-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David M  Konen → Konen Rock Crushing Inc; 2018-03-30 to 1991-07-29; source msha-controller-operator-history