# Relationship history for MSHA mine 2602382

Current hierarchy: **Keith  Jones → Small Mine Development → DEE NORTH U/G PROJECT**

- 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:** Ronald W  Guill → DEE NORTH U/G PROJECT; 1988-04-01 to 2011-01-27; source msha-controller-operator-history
- **controller_controls_mine:** American Contract Miners Inc → DEE NORTH U/G PROJECT; 1989-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** American Mine Services Inc → DEE NORTH U/G PROJECT; 1999-05-01 to 1999-11-15; source msha-controller-operator-history
- **controller_controls_operator:** American Contract Miners Inc → American Mine Services Inc; 1999-05-01 to 1999-11-15; source msha-controller-operator-history
- **operator_operates_mine:** Small Mine Development → DEE NORTH U/G PROJECT; 1999-11-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ronald W  Guill → Small Mine Development; 1999-11-16 to 2011-01-27; source msha-controller-operator-history
- **controller_controls_mine:** Keith  Jones → DEE NORTH U/G PROJECT; 2011-01-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Keith  Jones → Small Mine Development; 2011-01-28 to current/open; source msha-controller-operator-history