Cats' ear temperature chages as much as the weather. Warm or even hot ears are not reliable gauges of cat health. Let's explore cat ear health.
Mining in Ancient Greece. The Greeks used bronze, a mix of tin and copper, for their weapons and tools. Later, iron was used because it produced harder tools and weapons.Athens found a large amount of silver in the mines at Laurium.At its peak, Athens had over 20,000 slaves mining at Laurium. At the request of Themistocles, they used the money from these mines to pay for a large navy.This investment in the navy paid off in their development of a large trade network around the Mediterranean. There were very good mining areas around Greece.ater, iron was used because it produced harder tools and weapons. Athens found a large amount of silver in the mines at Laurium. At its peak, Athens had over 20,000 slaves mining at Laurium. At the request of Themistocles, they used the money from these mines to pay for a large navy.
There were extensive gold mines in Nubia, and one of the first maps known is of a gold mine in this region. The Wadi Hammamat was a notable source of granite, greywacke, and gold. The Egyptians worked deposits of the lead ore galena at Gebel Rosas to make net sinkers, plumb bobs, and small figurines. Copper was the most important metal for toolmaking in ancient Egypt and was smelted in furnaces from malachite ore mined in the Sinai. Workers collected gold by washing the nuggets out of sediment in alluvial deposits, or by the more labor-intensive process of grinding and washing gold-bearing quartzite.