# Relationship history for MSHA mine 2103073

Current hierarchy: **David  Kraemer; Michael  Skubic → Auburn Minerals Llc → AUBURN MINE**

- 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:** Auburn Minerals Llc → AUBURN MINE; 1994-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** David  Kraemer  et al → AUBURN MINE; 1994-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David  Kraemer  et al → Auburn Minerals Llc; 1994-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Skubic  et al → Auburn Minerals Llc; 1994-03-01 to current/open; source msha-controller-operator-history