Rosita's first wellfields were drilled in the spring of 1990 at a time when the Kingsville Dome Project was preparing to go on stand-by
status because of low market prices for uranium. The plant was built from the surplus material from 5 other South Texas ISL operations. They
include: URI's Bruni and Benavides, Caithness McBride, US Steel's ClayWest, and Westinghouse's Bruni. The plant could easily sustain wellfield
flows of 3,500 gpm. The concept of restoring while mining was initiated upon start-up whereby a reverse osmosis system would treat
lixiviant thereby controlling the natural built-up of Total Dissolved Solids (TDS) in the mine solution.
The first 3 wellfields were drilled on varying well spacing to explore mining recovery efficiencies. Multi-interval completed wells were used in the first 2 wellfields when it was decided that single interval completed wells were more efficient in recovering the mineral. Thereafter, at both Rosita and Kingsville all mining wells were completed in this matter. A disequilibrium logging tool was used to determine the presence of uranium mineralization.
The project was placed in restoration in 1999 and currently is being restore.
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