# Relationship history for MSHA mine 0405660

Current hierarchy: **John C  Telischak; William  Bunce → Newman Minerals, LLC → Irish Hill Portable Plant No. 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: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** DeSilva Gates Construction → Irish Hill Portable Plant No. 1; 2005-09-29 to 2009-09-16; source msha-controller-operator-history
- **controller_controls_mine:** Edwin O  DeSilva et al → Irish Hill Portable Plant No. 1; 2005-09-29 to 2022-05-04; source msha-controller-operator-history
- **controller_controls_operator:** Edwin O  DeSilva et al → DeSilva Gates Construction; 2005-09-29 to 2009-09-16; source msha-controller-operator-history
- **controller_controls_operator:** Richard B  Gates et al → DeSilva Gates Construction; 2005-09-29 to 2009-09-16; source msha-controller-operator-history
- **operator_operates_mine:** SGC Materials, Inc. → Irish Hill Portable Plant No. 1; 2009-09-17 to 2013-04-29; source msha-controller-operator-history
- **controller_controls_mine:** Top Grade Construction → Irish Hill Portable Plant No. 1; 2009-09-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Top Grade Construction → SGC Materials, Inc.; 2009-09-17 to 2013-04-29; source msha-controller-operator-history
- **controller_controls_mine:** William  Bunce et al → Irish Hill Portable Plant No. 1; 2012-05-23 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Newman Minerals, LLC → Irish Hill Portable Plant No. 1; 2013-04-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William  Bunce et al → Newman Minerals, LLC; 2013-04-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John C  Telischak et al → Newman Minerals, LLC; 2013-04-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Richard B Gates et al → Irish Hill Portable Plant No. 1; 2022-05-05 to 2025-04-10; source msha-controller-operator-history
- **controller_controls_operator:** Richard B Gates et al → DeSilva Gates Construction; 2022-05-05 to 2009-09-16; source msha-controller-operator-history
- **controller_controls_operator:** De Silva Holding Company Inc et al → DeSilva Gates Construction; 2022-05-05 to 2009-09-16; source msha-controller-operator-history
- **controller_controls_mine:** Oliver DeSilva Inc et al → Irish Hill Portable Plant No. 1; 2025-04-11 to 2025-12-18; source msha-controller-operator-history
- **controller_controls_operator:** Oliver DeSilva Inc et al → DeSilva Gates Construction; 2025-04-11 to 2009-09-16; source msha-controller-operator-history
- **controller_controls_operator:** El Portal Real Estate Co et al → DeSilva Gates Construction; 2025-04-11 to 2009-09-16; source msha-controller-operator-history
- **controller_controls_mine:** Richard B Gates et al → Irish Hill Portable Plant No. 1; 2025-12-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard B Gates et al → DeSilva Gates Construction; 2025-12-19 to 2009-09-16; source msha-controller-operator-history
- **controller_controls_operator:** De Silva Holding Company Inc et al → DeSilva Gates Construction; 2025-12-19 to 2009-09-16; source msha-controller-operator-history