Science Struck
Science Struck: Properties of Halogens
Looks at the chemical and physical properties of halogens.
Science Struck
Science Struck: Characteristics of Halogens
Learn about the characteristics, chemical and physical properties, and uses of halogens.
Curated OER
Unesco: Germany: Mines of Rammelsberg, Goslar & Upper Harz Water Mgmt System
The Upper Harz mining water management system, which lies south of the Rammelsberg mines and the town of Goslar, has been developed over a period of some 800 years to assist in the process of extracting ore for the production of...
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