# Relationship history for MSHA mine 0504438

Current hierarchy: **R. E. D. Graniti S.p.a. → COLORADO STONE QUARRIES, INC. → PRIDE OF AMERICA MINE**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Colorado Yule Marble Company → PRIDE OF AMERICA MINE; 1990-06-01 to 1998-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Greg J  Faith → PRIDE OF AMERICA MINE; 1990-06-01 to 1998-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Greg J  Faith → Colorado Yule Marble Company; 1990-06-01 to 1998-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Colorado Yule Marble Company → PRIDE OF AMERICA MINE; 1998-07-01 to 1999-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Peter  Carroll → PRIDE OF AMERICA MINE; 1998-07-01 to 1999-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Peter  Carroll → Colorado Yule Marble Company; 1998-07-01 to 1999-02-28; source msha-controller-operator-history
- **operator_operates_mine:** Sierra Minerals Corp → PRIDE OF AMERICA MINE; 1999-03-01 to 2004-04-25; source msha-controller-operator-history
- **controller_controls_mine:** Rex E  Loesby → PRIDE OF AMERICA MINE; 1999-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rex E  Loesby → Sierra Minerals Corp; 1999-03-01 to 2004-04-25; source msha-controller-operator-history
- **controller_controls_mine:** Polycor Inc → PRIDE OF AMERICA MINE; 2003-08-05 to 2023-08-09; source msha-controller-operator-history
- **operator_operates_mine:** Georgia Marble → PRIDE OF AMERICA MINE; 2004-04-26 to 2006-07-09; source msha-controller-operator-history
- **controller_controls_operator:** Polycor Inc → Georgia Marble; 2004-04-26 to 2006-07-09; source msha-controller-operator-history
- **operator_operates_mine:** Colorado Stone Quarries, Inc. → PRIDE OF AMERICA MINE; 2006-07-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Polycor Inc → PRIDE OF AMERICA MINE; 2006-07-10 to 2010-10-31; source msha-controller-operator-history
- **controller_controls_operator:** Polycor Inc → Colorado Stone Quarries, Inc.; 2006-07-10 to 2010-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Enrico L  Luciani → PRIDE OF AMERICA MINE; 2010-11-01 to 2013-06-10; source msha-controller-operator-history
- **controller_controls_operator:** Enrico L  Luciani → Colorado Stone Quarries, Inc.; 2010-11-01 to 2013-06-10; source msha-controller-operator-history
- **controller_controls_mine:** R. E. D. Graniti S.p.a. → PRIDE OF AMERICA MINE; 2013-06-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** R. E. D. Graniti S.p.a. → Colorado Stone Quarries, Inc.; 2013-06-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** TorQuest Partners Inc → PRIDE OF AMERICA MINE; 2023-08-10 to 2023-08-31; source msha-controller-operator-history
- **controller_controls_operator:** TorQuest Partners Inc → Georgia Marble; 2023-08-10 to 2006-07-09; source msha-controller-operator-history
- **controller_controls_mine:** Polycor Inc → PRIDE OF AMERICA MINE; 2023-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Polycor Inc → Georgia Marble; 2023-09-01 to 2006-07-09; source msha-controller-operator-history