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Glass Slag/Cullet Rocks

I was wondering if anyone collects or looks for glass slag/cullet rocks, which are the remnants of glass that hardened inside furnaces and are often found near old glass factories. Rounded pieces of glass resembling river rocks can also be found in waterways if you look very carefully. Here is...
- WesternPA-collector
- Thread
- Jun 12, 2018
- cullet glass rock slag yellow
- Replies: 2
- Forum: General Chat
U
For Sale: antique blue slag glass

Hello, my name is Jacob. I have a good amount of quality (blue) slag glass from the heart of iron mining in the Great Lakes region. The furnace in which my material comes from dates back to 1857. To be specific, The Jackson mine (Negaunee, MI) was the first iron mine in the Great Lakes region...
- U.P.SlagDistributor
- Thread
- Sep 19, 2017
- antique glass jewelry sale slag
- Replies: 0
- Forum: Bottles for Sale or Trade (WTS, WTT)
Arizona insulators

Here in Arizona no one really collects. Here's a few someone gave me. I melt them to make lighting fixtures.
- Tombstone Brick
- Thread
- Jun 4, 2016
- glass insulator
- Replies: 4
- Forum: Insulators
J
Unusual glass jar lid with patent dates

Can anyone tell me anything about this lid? It is glass, rises up in the middle, and has no threads. Doesn't appear to be one of the flat lids you use with a ring either. Definitely not the ceramic insert in a zinc lid. I'll try to attach some pics. In the middle, where it's raised, there...
- JForshey
- Thread
- Jan 30, 2016
- dates glass jar lid patent
- Replies: 2
- Forum: Jars General discussion