Christopher Schutz (1521–1592) also commonly known in England as Jonas Schutz, was a German-born metallurgist who worked in England for several decades. He built England's first blast furnace at Tintern, and was one of the principal assayers of the worthless ore brought from Baffin Island by Sir Martin Frobisher.
Modern-day Kimmirut, in the area known to Schutz as Meta Incognita
Burchard Kranich was a mining engineer and physician who came to England from Germany. He was involved in mining ventures in Derbyshire and Cornwall, and in assaying the black ore, thought to be gold-bearing, brought back to England from Baffin Island by Martin Frobisher. He later practised as a physician in London, where he enjoyed a mixed reputation, and is said to have attended Elizabeth I when she contracted smallpox. He is alluded to in several literary works published during the reigns of Elizabeth I and James I.
The Derwent near Duffield, where Kranich erected a watermill for his lead mining operations in 1554
Martin Frobisher, who is said to have favoured Kranich
Contemporary depiction of a witch feeding her familiars