# Relationship history for MSHA mine 4604847

Current hierarchy: **Jerry L  Bays; Neil E  Bays → J & N Porcessing Company Llc → J&N Processing Plant No 1**

- 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:** Cyprus Amax Minerals Company → J&N Processing Plant No 1; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Maple Meadow Mining Company → J&N Processing Plant No 1; 1975-01-01 to 1998-07-14; source msha-controller-operator-history
- **controller_controls_operator:** Cyprus Amax Minerals Company → Maple Meadow Mining Company; 1975-01-01 to 1998-07-14; source msha-controller-operator-history
- **operator_operates_mine:** J & N Porcessing Company Llc → J&N Processing Plant No 1; 1998-07-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Neil E  Bays et al → J&N Processing Plant No 1; 1998-07-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Neil E  Bays et al → J & N Porcessing Company Llc; 1998-07-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jerry L  Bays et al → J & N Porcessing Company Llc; 1998-07-15 to current/open; source msha-controller-operator-history