192 ZIRCONIUM AND HAFNIUM USGS
Recycling: Companies in Oregon and Utah recycled zirconium from new scrap generated during metal production and fabri ion and or from postcommercial old scrap. Zircon foundry mold cores and spent or rejected zirconia refractories are often recycled. Hafnium metal recycling was insignificant.
Cenozoic evolution of the Yangtze River: Constraints from
Therefore zircon data of the Oligocene sediment in the Song HongYinggehai Basin do not support a connection between the Song HongYinggehai Basin and the present upper Yangtze. The above controversy may be caused by the complexity of sediment provenance discrimination based on various proxies and complex sediment recycling. 5.5.
Photoluminescence Imaging of Whole Zircon Grains on a
The refractory nature of zircon to temperature and pressure allows even a single zircon grain to preserve a rich history of magmatic metamorphic and hydrothermal processes. Isotopic dating of microdomains exposed in crosssections of zircon grains allows us to interrogate this history. Unfortunately our ability to select the zircon grains in a heavy mineral concentrate that records the
Supplemental Environmental Project SEP : Canyon Plastics Inc.
SEP: Canyon Plastics Inc. Tail and Scrap Recycling EHI Project No. CPI916B Plant Inc. Plastics Scrap Pollution Prevention The Pollution Prevention Act of 1990 42 U.S.C. 1310113109 identifies an environmental
Plastics News Cadillac Products creates permanent PPE
Cadillac Products 39 Paris Ill. plant extruded 1.8mil polyethylene film which was shipped to CPI plants in Michigan where volunteers cut the gown shapes and heatsealed the sleeves. It was a
Isotopic fingerprints of mountain uplift and global cooling
The modern terrestrial vascular plants have a predominance of oddcarbon numbered nalkanes with average CPI values greater than 4 Collister et al. 1994 . The average CPI of the Hexi Corridor samples is 1.3 Fig. S2 which is low than the average CPI 3.5 of the last glacial sediments in the Qaidam Basin Hou et al. 2020 .
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