# Relationship history for MSHA mine 1103085

Current hierarchy: **Kenneth T Sandeno → Morris Sand & Gravel, Inc. → KA-LO Pit**

- 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:** Morris Sand & Gravel Inc → KA-LO Pit; 2001-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Romines Larry → KA-LO Pit; 2001-05-01 to 2003-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Romines Larry → Morris Sand & Gravel Inc; 2001-05-01 to 2003-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth T Sandeno → KA-LO Pit; 2004-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth T Sandeno → Morris Sand & Gravel Inc; 2004-01-01 to current/open; source msha-controller-operator-history