Alfred Nobel patented Dynamite in 1867 and it made him enormously wealthy, leading him to sponsor the Nobel Prize.
The Giant Powder Company in San Francisco was the first company to manufacture dynamite on Nobel's patent. Business was brisk, but the factories kept exploding. They wanted to stay in business while killing fewer people so over the next several years they kept moving to more and more remote locations, finally settling at Point Pinole in the nether-regions of Richmond, CA.
The old site of the Giant Powder Company (which was acquired by the Atlas Powder Company) is now a large park, crisscrossed by a network of trails, all small-gauge-railroad-graded. Some are paved, most are dirt or gravel. Some are brick. It's a great place to ride, walk and run. If Richmond CA was the USA, then Point Pinole is the Olympic Peninsula (Seattle) of Richmond.
Bill Lindsay
El Cerrito, CA