# Relationship history for MSHA mine 2600813

Current hierarchy: **Kevin  Jeakins → J & M Trucking Inc → Isbel Pit**

- 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:** J & M Trucking Inc → Isbel Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Tony  Locke et al → Isbel Pit; 1950-01-01 to 2023-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Tony  Locke et al → J & M Trucking Inc; 1950-01-01 to 2023-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Kevin  Jeakins → Isbel Pit; 2023-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kevin  Jeakins → J & M Trucking Inc; 2023-08-01 to current/open; source msha-controller-operator-history