# Relationship history for MSHA mine 5001685

Current hierarchy: **Jake A Marquez; Dawn L Marquez → Knik Landscaping → Knik Landscaping**

- 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:** Knik Landscaping → Knik Landscaping; 2000-06-01 to 2015-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Jake  Marquez → Knik Landscaping; 2000-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jake  Marquez → Knik Landscaping; 2000-06-01 to 2015-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Knik Landscaping → Knik Landscaping; 2016-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dawn L Marquez et al → Knik Landscaping; 2016-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dawn L Marquez et al → Knik Landscaping; 2016-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jake A Marquez et al → Knik Landscaping; 2016-01-01 to current/open; source msha-controller-operator-history