Here, we will be examining the production of the brass body of a Zippo lighter.
Disposable lighters are made with a plastic body and are discharged when lighter fluid is used up. Zippo lighters on the other hand are reusable and have a life time guarantee. Instead of throwing away a lighter when it runs out of fuel, a Zippo lighter can be refueled and reused. This cuts down on a significant amount of waste in landfills and moreover, nearly 90% of all brass alloys are recycled.
Brass is an alloy of copper and zinc. It has a relatively low melting point (900-940 degrees Celsius) which makes it a easier and more efficient substance to mold compared to denser metals.Brass is malleable yet strong and corrosion resistant, making it ideal for Zippo lighters.
Zippo's manufacturing plant is in Bradford Pennsylvania. Therefor it is most sustainable for their company to get their materials from a relatively nearby mine in order to cut down on transportation costs and fossil fuel consumption.
The United States is produces about 65% of it's copper that it consumes. The United States is the fourth largest producer and has the fourth largest reserves globally. This means two things, that it is most likely that Zippo gets it's copper domestically and that it is likely to do so for a long time.
Nearly 80% of zinc around the world is mined underground, a relatively eco-friendly method of mining although it requires much more manual labour. Underground mining still has it's challenges like ventilation so that workers are less exposed to toxic chemicals and also ground support so the workers aren't crushed by the earth above them.
Zinc is also a major resource mined in the United States. The Red Dog Mine in Alaska is the largest zinc mine in the world aiding the United States to produce the fourth largest amount of zinc in the world. Although the majority of zinc mines are underground mines, the Red Dog Mine is an open pit mine because the valuable ore's are found close to the earths surface.