Amstel Engineering is a U.S. firm with 2,300 employees headquartered in San Francisco that does engineering consulting and large-scale construction projects around the world.13 Regional offices […]
Electric shocks A study carried out by R. Norell was designed to learn about the effect of small electrical currents on farm animals, with the eventual […]
Donner party In the winter of 1846–1847, about 90 wagon train emigrants in the Donner party were unable to cross the Sierra Nevada Mountains of California […]