# Relationship history for MSHA mine 4104062

Current hierarchy: **William (Danny)  Myre → Claymark Materials Inc → CLAYMARK MATERIALS, INC.**

- 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:** Claymark Materials Inc → CLAYMARK MATERIALS, INC.; 1999-02-01 to 2000-09-30; source msha-controller-operator-history
- **controller_controls_mine:** William (Danny)  Myre  et al → CLAYMARK MATERIALS, INC.; 1999-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William (Danny)  Myre  et al → Claymark Materials Inc; 1999-02-01 to 2000-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Graco Materials Ltd → CLAYMARK MATERIALS, INC.; 2000-10-01 to 2001-01-14; source msha-controller-operator-history
- **controller_controls_mine:** Graco Transportation Inc  et al → CLAYMARK MATERIALS, INC.; 2000-10-01 to 2001-01-14; source msha-controller-operator-history
- **controller_controls_operator:** Graco Transportation Inc  et al → Graco Materials Ltd; 2000-10-01 to 2001-01-14; source msha-controller-operator-history
- **operator_operates_mine:** Claymark Materials Inc → CLAYMARK MATERIALS, INC.; 2001-01-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William (Danny)  Myre  et al → Claymark Materials Inc; 2001-01-15 to current/open; source msha-controller-operator-history