# Relationship history for MSHA mine 4700793

Current hierarchy: **Christopher  Cape → James Cape & Sons Company → EL-JAY CONE 24X36  #205032"**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Cedarburg Sand & Gravel Inc → EL-JAY CONE 24X36  #205032"; 1950-01-01 to 1988-07-19; source msha-controller-operator-history
- **controller_controls_mine:** Stern Norbert A → EL-JAY CONE 24X36  #205032"; 1950-01-01 to 1988-07-19; source msha-controller-operator-history
- **controller_controls_operator:** Stern Norbert A → Cedarburg Sand & Gravel Inc; 1950-01-01 to 1988-07-19; source msha-controller-operator-history
- **controller_controls_mine:** Merget Ken & Jack → EL-JAY CONE 24X36  #205032"; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Christopher  Cape → EL-JAY CONE 24X36  #205032"; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Quality Crushing Company Inc → EL-JAY CONE 24X36  #205032"; 1988-07-20 to 1996-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Merget Ken & Jack → Quality Crushing Company Inc; 1988-07-20 to 1996-09-30; source msha-controller-operator-history
- **operator_operates_mine:** James Cape & Sons Company → EL-JAY CONE 24X36  #205032"; 1996-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Christopher  Cape → James Cape & Sons Company; 1996-10-01 to current/open; source msha-controller-operator-history