# Relationship history for MSHA mine 3002910

Current hierarchy: **David  Spallina → Spallina Materials, Inc. → Oak Openings**

- 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:** John M  Odenbach → Oak Openings; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bo-Ide Inc → Oak Openings; 1989-09-01 to 1990-05-06; source msha-controller-operator-history
- **controller_controls_mine:** John M  Mc Bride  et al → Oak Openings; 1989-09-01 to 1990-05-06; source msha-controller-operator-history
- **controller_controls_operator:** John M  Mc Bride  et al → Bo-Ide Inc; 1989-09-01 to 1990-05-06; source msha-controller-operator-history
- **controller_controls_mine:** Needler Group → Oak Openings; 1989-12-28 to 1999-07-13; source msha-controller-operator-history
- **operator_operates_mine:** Tcg Materials (New York) Inc → Oak Openings; 1990-05-07 to 1995-05-14; source msha-controller-operator-history
- **controller_controls_operator:** Needler Group → Tcg Materials (New York) Inc; 1990-05-07 to 1995-05-14; source msha-controller-operator-history
- **operator_operates_mine:** Dolomite Products Company Inc → Oak Openings; 1995-05-15 to 2000-06-13; source msha-controller-operator-history
- **controller_controls_operator:** John M  Odenbach → Dolomite Products Company Inc; 1995-05-15 to 2000-06-13; source msha-controller-operator-history
- **operator_operates_mine:** Dolomite Products Company Inc → Oak Openings; 2000-06-14 to 2002-09-08; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → Oak Openings; 2000-06-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Dolomite Products Company Inc; 2000-06-14 to 2002-09-08; source msha-controller-operator-history
- **operator_operates_mine:** Dolomite Group → Oak Openings; 2002-09-09 to 2018-05-14; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Dolomite Group; 2002-09-09 to 2018-05-14; source msha-controller-operator-history
- **controller_controls_mine:** David  Spallina → Oak Openings; 2006-07-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dale  Twardokus et al → Oak Openings; 2015-09-02 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Victor Gravel Corp → Oak Openings; 2018-05-15 to 2025-05-14; source msha-controller-operator-history
- **controller_controls_operator:** Dale  Twardokus et al → Victor Gravel Corp; 2018-05-15 to 2025-05-14; source msha-controller-operator-history
- **controller_controls_operator:** Richard P Hannan et al → Victor Gravel Corp; 2018-05-15 to 2025-05-14; source msha-controller-operator-history
- **operator_operates_mine:** Spallina Materials, Inc. → Oak Openings; 2025-05-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David  Spallina → Spallina Materials, Inc.; 2025-05-15 to current/open; source msha-controller-operator-history