# Relationship history for MSHA mine 4801889

Current hierarchy: **Tammie Marie Neville; Robert Gordon Perry → K.A.R.T.LLC → Screen 1**

- 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:** Tammie Marie Neville et al → Screen 1; 2024-07-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** K.A.R.T.LLC → Screen 1; 2024-11-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tammie Marie Neville et al → K.A.R.T.LLC; 2024-11-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert Gordon Perry et al → K.A.R.T.LLC; 2024-11-04 to current/open; source msha-controller-operator-history