# Relationship history for MSHA mine 3402064

Current hierarchy: **Nicholas S Parker → Parker Rock Inc → Quarry #2**

- 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:** Michael C  Parker → Quarry #2; 2002-02-07 to 2016-09-06; source msha-controller-operator-history
- **controller_controls_mine:** Everett B Morris et al → Quarry #2; 2004-01-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Morris Stone CO → Quarry #2; 2008-04-21 to 2019-01-14; source msha-controller-operator-history
- **controller_controls_operator:** Everett B Morris et al → Morris Stone CO; 2008-04-21 to 2019-01-14; source msha-controller-operator-history
- **controller_controls_operator:** Johnny W Morris et al → Morris Stone CO; 2008-04-21 to 2019-01-14; source msha-controller-operator-history
- **controller_controls_mine:** Nicholas S Parker → Quarry #2; 2016-09-07 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Parker Rock Inc → Quarry #2; 2019-01-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael C  Parker → Parker Rock Inc; 2019-01-15 to 2016-09-06; source msha-controller-operator-history
- **controller_controls_operator:** Nicholas S Parker → Parker Rock Inc; 2019-01-15 to current/open; source msha-controller-operator-history