# Relationship history for MSHA mine 0102876

Current hierarchy: **Bailey Darryl → Contract Augering Services Inc → Magbee Bend No 1 Mine**

- 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:** Bailey Darryl Et Al → Magbee Bend No 1 Mine; 1988-03-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Z Mining Inc → Magbee Bend No 1 Mine; 1990-09-01 to 1990-11-20; source msha-controller-operator-history
- **controller_controls_mine:** Marcum Zora → Magbee Bend No 1 Mine; 1990-09-01 to 1991-11-18; source msha-controller-operator-history
- **controller_controls_operator:** Marcum Zora → Z Mining Inc; 1990-09-01 to 1990-11-20; source msha-controller-operator-history
- **operator_operates_mine:** Contract Augering Services Inc → Magbee Bend No 1 Mine; 1990-11-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bailey Darryl Et Al → Contract Augering Services Inc; 1990-11-21 to current/open; source msha-controller-operator-history