# Relationship history for MSHA mine 4300794

Current hierarchy: **Jason P  Sicard → Kingdom Gravel → 2018 Samvick QE341 Scalp Screen**

- 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:** Jason P  Sicard → 2018 Samvick QE341 Scalp Screen; 2013-05-14 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Kingdom Gravel → 2018 Samvick QE341 Scalp Screen; 2018-09-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jason P  Sicard → Kingdom Gravel; 2018-09-06 to current/open; source msha-controller-operator-history