# Relationship history for MSHA mine 0405275

Current hierarchy: **Bill T  Dutra → Dutra Materials → DECKER ISLAND**

- 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:** Bill T  Dutra → DECKER ISLAND; 1986-05-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mega Sand Inc → DECKER ISLAND; 1995-03-01 to 2011-04-12; source msha-controller-operator-history
- **controller_controls_mine:** Taiki Corp U S A → DECKER ISLAND; 1995-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Taiki Corp U S A → Mega Sand Inc; 1995-03-01 to 2011-04-12; source msha-controller-operator-history
- **operator_operates_mine:** D.I. Aggregate Management LLC → DECKER ISLAND; 2011-04-13 to 2018-10-04; source msha-controller-operator-history
- **controller_controls_mine:** Randy  Jensen et al → DECKER ISLAND; 2011-04-13 to 2015-09-21; source msha-controller-operator-history
- **controller_controls_operator:** Randy  Jensen et al → D.I. Aggregate Management LLC; 2011-04-13 to 2015-09-21; source msha-controller-operator-history
- **controller_controls_operator:** Thomas P.  Farrell Jr. et al → D.I. Aggregate Management LLC; 2011-04-13 to 2015-09-21; source msha-controller-operator-history
- **controller_controls_mine:** Randy  Jensen et al → DECKER ISLAND; 2015-09-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randy  Jensen et al → D.I. Aggregate Management LLC; 2015-09-22 to 2018-10-04; source msha-controller-operator-history
- **controller_controls_operator:** Nathan  Birchall et al → D.I. Aggregate Management LLC; 2015-09-22 to 2018-10-04; source msha-controller-operator-history
- **operator_operates_mine:** Dutra Materials → DECKER ISLAND; 2018-10-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bill T  Dutra → Dutra Materials; 2018-10-05 to current/open; source msha-controller-operator-history