# Relationship history for MSHA mine 4104212

Current hierarchy: **Scott  Rozier; Richard  Jenkins → DBR Limestone LLC → DBR Limestone**

- 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:** Limestone Connection → DBR Limestone; 2000-09-01 to 2022-04-26; source msha-controller-operator-history
- **controller_controls_mine:** Rick  Hartcraft → DBR Limestone; 2000-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rick  Hartcraft → Limestone Connection; 2000-09-01 to 2022-04-26; source msha-controller-operator-history
- **operator_operates_mine:** DBR Limestone LLC → DBR Limestone; 2022-04-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Richard  Jenkins et al → DBR Limestone; 2022-04-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Jenkins et al → DBR Limestone LLC; 2022-04-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott  Rozier et al → DBR Limestone LLC; 2022-04-27 to current/open; source msha-controller-operator-history