Slag in lime lumps burnt at high temperatures. Left: mortar from the 12th C Hedrum church, SE Norway. Right: impure, fossil-rich, Silurian limestone burn in our small kiln at the south coast in 2023. Photos by Per Storemyr
Slag in lime lumps burnt at high temperatures. Left: mortar from the 12th C Hedrum church, SE Norway. Right: impure, fossil-rich, Silurian limestone burn in our small kiln at the south coast in 2023. Photos by Per Storemyr
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