# Relationship history for MSHA mine 3003493

Current hierarchy: **Allen Lee  Decker; Kenneth E  Decker → Kenneth E Decker → D+D Flagstone Inc**

- 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:** Kenneth E. Decker → D+D Flagstone Inc; 2005-05-05 to 2010-03-16; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth E  Decker et al → D+D Flagstone Inc; 2005-05-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth E  Decker et al → Kenneth E. Decker; 2005-05-05 to 2010-03-16; source msha-controller-operator-history
- **controller_controls_operator:** Allen Lee  Decker et al → Kenneth E. Decker; 2005-05-05 to 2010-03-16; source msha-controller-operator-history
- **operator_operates_mine:** Kenneth E Decker → D+D Flagstone Inc; 2010-03-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth E  Decker et al → D+D Flagstone Inc; 2010-03-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth E  Decker et al → Kenneth E Decker; 2010-03-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Allen Lee  Decker et al → Kenneth E Decker; 2010-03-17 to current/open; source msha-controller-operator-history