# Relationship history for MSHA mine 4003334

Current hierarchy: **Timothy J  Kellems → Kellems Excavating Inc → Kellems/Newport**

- 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:** Burress Stone Construction → Kellems/Newport; 2008-09-23 to 2010-03-25; source msha-controller-operator-history
- **controller_controls_mine:** Timothy  Burress → Kellems/Newport; 2008-09-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Timothy  Burress → Burress Stone Construction; 2008-09-23 to 2010-03-25; source msha-controller-operator-history
- **operator_operates_mine:** Kellems Excavating Inc → Kellems/Newport; 2010-03-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Timothy J  Kellems → Kellems/Newport; 2010-03-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Timothy J  Kellems → Kellems Excavating Inc; 2010-03-26 to current/open; source msha-controller-operator-history