# Relationship history for MSHA mine 3304719

Current hierarchy: **Cris  Sidwell → CUMBERLAND LIMESTONE → SALTILLO CLAY**

- 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:** Cris  Sidwell → SALTILLO CLAY; 2005-03-14 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** CUMBERLAND LIMESTONE → SALTILLO CLAY; 2015-09-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cris  Sidwell → CUMBERLAND LIMESTONE; 2015-09-23 to current/open; source msha-controller-operator-history