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Lead
12.21.2019
Wood, stone, iron and lead: what do we know about the materials used to build Notre-Dame and the construction techniques employed at the time? Should they be replicated? And which tests that were...
Opinion
02.14.2018
Every year, huge amounts of explosives are used worldwide to build roads, extract minerals, or put satellites into orbit. Yet the processes currently in use disperse large quantities of lead into the...