# Relationship history for MSHA mine 2100482

Current hierarchy: **Victoria  Kreger → Conteck Enterprises Inc → EL JAY CONE 6042**

- 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:** Bury & Carlson Inc → EL JAY CONE 6042; 1950-01-01 to 1985-10-20; source msha-controller-operator-history
- **controller_controls_mine:** Bury & Carlson Inc → EL JAY CONE 6042; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bury & Carlson Inc → Bury & Carlson Inc; 1950-01-01 to 1985-10-20; source msha-controller-operator-history
- **operator_operates_mine:** Elk River Land Fill Inc → EL JAY CONE 6042; 1985-10-21 to 1987-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Lawrence  Kreger → EL JAY CONE 6042; 1985-10-21 to 1987-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Lawrence  Kreger → Elk River Land Fill Inc; 1985-10-21 to 1987-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Conteck Enterprises Inc → EL JAY CONE 6042; 1987-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Victoria  Kreger → EL JAY CONE 6042; 1987-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Victoria  Kreger → Conteck Enterprises Inc; 1987-04-01 to current/open; source msha-controller-operator-history