# Relationship history for MSHA mine 0103345

Current hierarchy: **Randall Jason Hyatt → Randall Jason Hyatt, Inc. d/b/a JACO → Cooper 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

- **controller_controls_mine:** Randall Jason Hyatt → Cooper Pit; 2001-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Excel Sand and Gravel LLC → Cooper Pit; 2006-04-23 to 2011-09-13; source msha-controller-operator-history
- **controller_controls_mine:** Jimmy  Dawson  et al → Cooper Pit; 2006-04-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jimmy  Dawson  et al → Excel Sand and Gravel LLC; 2006-04-23 to 2011-09-13; source msha-controller-operator-history
- **controller_controls_operator:** Mike  Nall  et al → Excel Sand and Gravel LLC; 2006-04-23 to 2011-09-13; source msha-controller-operator-history
- **operator_operates_mine:** Randall Jason Hyatt, Inc. d/b/a JACO → Cooper Pit; 2011-09-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randall Jason Hyatt → Randall Jason Hyatt, Inc. d/b/a JACO; 2011-09-14 to current/open; source msha-controller-operator-history