# Relationship history for MSHA mine 4503220

Current hierarchy: **Dylan  Parsons; John  Peters; Mike  Parsons → Black Lake Resources → Grand Mound**

- 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:** Cascade Hauling & Construction → Grand Mound; 1990-04-01 to 1992-10-18; source msha-controller-operator-history
- **controller_controls_mine:** Dana  Madsen → Grand Mound; 1990-04-01 to 1992-10-18; source msha-controller-operator-history
- **controller_controls_operator:** Dana  Madsen → Cascade Hauling & Construction; 1990-04-01 to 1992-10-18; source msha-controller-operator-history
- **operator_operates_mine:** B & C Logging Inc → Grand Mound; 1992-10-19 to 1995-03-28; source msha-controller-operator-history
- **controller_controls_mine:** Robert O  Beagley → Grand Mound; 1992-10-19 to 1995-03-28; source msha-controller-operator-history
- **controller_controls_operator:** Robert O  Beagley → B & C Logging Inc; 1992-10-19 to 1995-03-28; source msha-controller-operator-history
- **operator_operates_mine:** Cascade Sand & Gravel Inc → Grand Mound; 1995-03-29 to 2003-05-19; source msha-controller-operator-history
- **controller_controls_mine:** Joe B  Clerget  et al → Grand Mound; 1995-03-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joe B  Clerget  et al → Cascade Sand & Gravel Inc; 1995-03-29 to 2003-05-19; source msha-controller-operator-history
- **controller_controls_operator:** Larry A  Clerget  et al → Cascade Sand & Gravel Inc; 1995-03-29 to 2003-05-19; source msha-controller-operator-history
- **controller_controls_mine:** Albert N  DeAtley et al → Grand Mound; 1999-06-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Quality Rock Products Inc → Grand Mound; 2003-05-20 to 2017-03-25; source msha-controller-operator-history
- **controller_controls_operator:** Albert N  DeAtley et al → Quality Rock Products Inc; 2003-05-20 to 2017-03-25; source msha-controller-operator-history
- **controller_controls_operator:** Brien N  DeAtley et al → Quality Rock Products Inc; 2003-05-20 to 2017-03-25; source msha-controller-operator-history
- **operator_operates_mine:** Black Lake Resources Grand Mound Inc → Grand Mound; 2017-03-26 to 2019-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Dylan  Parsons et al → Grand Mound; 2017-03-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dylan  Parsons et al → Black Lake Resources Grand Mound Inc; 2017-03-26 to 2019-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Mike  Parsons et al → Black Lake Resources Grand Mound Inc; 2017-03-26 to 2019-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Black Lake Resources → Grand Mound; 2019-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mike  Parsons et al → Grand Mound; 2019-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mike  Parsons et al → Black Lake Resources; 2019-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Peters et al → Black Lake Resources; 2019-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dylan  Parsons et al → Black Lake Resources; 2019-05-01 to current/open; source msha-controller-operator-history