# Relationship history for MSHA mine 4002350

Current hierarchy: **Martin Lohren → B I T Inc → B I T Incorporated**

- 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:** B I T Inc → B I T Incorporated; 1977-11-01 to 1979-10-24; source msha-controller-operator-history
- **controller_controls_mine:** Mullis Samuel Et Al → B I T Incorporated; 1977-11-01 to 1979-10-24; source msha-controller-operator-history
- **controller_controls_operator:** Mullis Samuel Et Al → B I T Inc; 1977-11-01 to 1979-10-24; source msha-controller-operator-history
- **operator_operates_mine:** B I T Inc → B I T Incorporated; 1979-10-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Martin Lohren → B I T Incorporated; 1979-10-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Martin Lohren → B I T Inc; 1979-10-25 to current/open; source msha-controller-operator-history