Defect of the Month
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Deep Freeze
March, 2015
Dendritic Zirconia crystal growth from the cooling of melted AZS refractory material that dropped into the molten glass.
Diamond In The Rough
February, 2015
Corundum associated with cord in the glass
Nepheline Worm
January, 2015
Nepheline drip from refractories above melt line
Dendritic Zirconia
December, 2014
Re-crystalized Zirconia from AZS refractories