# Relationship history for MSHA mine 3606432

Current hierarchy: **John A  Decker; Tim  Decker → Jill Mining Company Inc → Cunnard Tipple**

- 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:** Jill Mining Company Inc → Cunnard Tipple; 1977-06-01 to 1986-10-19; source msha-controller-operator-history
- **controller_controls_mine:** Francis J  Hamilton et al → Cunnard Tipple; 1977-06-01 to 1986-10-19; source msha-controller-operator-history
- **controller_controls_operator:** Francis J  Hamilton et al → Jill Mining Company Inc; 1977-06-01 to 1986-10-19; source msha-controller-operator-history
- **operator_operates_mine:** Jill Mining Company Inc → Cunnard Tipple; 1986-10-20 to 1990-01-01; source msha-controller-operator-history
- **controller_controls_mine:** Marie  Hamilton → Cunnard Tipple; 1986-10-20 to 1990-01-01; source msha-controller-operator-history
- **controller_controls_operator:** Marie  Hamilton → Jill Mining Company Inc; 1986-10-20 to 1990-01-01; source msha-controller-operator-history
- **operator_operates_mine:** Jill Mining Company Inc → Cunnard Tipple; 1990-01-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John A  Decker et al → Cunnard Tipple; 1990-01-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John A  Decker et al → Jill Mining Company Inc; 1990-01-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tim  Decker et al → Jill Mining Company Inc; 1990-01-02 to current/open; source msha-controller-operator-history