# Relationship history for MSHA mine 3003927

Current hierarchy: **Dakota  Hyde → HYDES EXCAVATION & CONSTRUCTION INC → Nellis 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:** Acme Topsoil → Nellis Pit; 2014-07-31 to 2020-03-18; source msha-controller-operator-history
- **controller_controls_mine:** Allen R  Hildreth → Nellis Pit; 2014-07-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Allen R  Hildreth → Acme Topsoil; 2014-07-31 to 2020-03-18; source msha-controller-operator-history
- **operator_operates_mine:** HYDES EXCAVATION & CONSTRUCTION INC → Nellis Pit; 2020-03-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dakota  Hyde → Nellis Pit; 2020-03-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dakota  Hyde → HYDES EXCAVATION & CONSTRUCTION INC; 2020-03-19 to current/open; source msha-controller-operator-history