# Relationship history for MSHA mine 2501214

Current hierarchy: **Craig D Dobias; Kimberly D Dobias → Dobias Sand and Gravel, LLC. → Dobias Sand and Gravel, LLC.**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Jays Sand & Gravel → Dobias Sand and Gravel, LLC.; 2002-11-18 to 2012-03-12; source msha-controller-operator-history
- **controller_controls_mine:** Jayme (Jay)  Seger → Dobias Sand and Gravel, LLC.; 2002-11-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jayme (Jay)  Seger → Jays Sand & Gravel; 2002-11-18 to 2012-03-12; source msha-controller-operator-history
- **operator_operates_mine:** T & J Gravel Company LLC → Dobias Sand and Gravel, LLC.; 2012-03-13 to 2023-04-23; source msha-controller-operator-history
- **controller_controls_mine:** Jana M.  Panning et al → Dobias Sand and Gravel, LLC.; 2012-03-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jana M.  Panning et al → T & J Gravel Company LLC; 2012-03-13 to 2023-04-23; source msha-controller-operator-history
- **controller_controls_operator:** Tyler D.  Panning et al → T & J Gravel Company LLC; 2012-03-13 to 2023-04-23; source msha-controller-operator-history
- **operator_operates_mine:** Dobias Sand and Gravel, LLC. → Dobias Sand and Gravel, LLC.; 2023-04-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Craig D Dobias et al → Dobias Sand and Gravel, LLC.; 2023-04-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Craig D Dobias et al → Dobias Sand and Gravel, LLC.; 2023-04-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kimberly D Dobias et al → Dobias Sand and Gravel, LLC.; 2023-04-24 to current/open; source msha-controller-operator-history