- Bronze is an alloy consisting primarily of copper, commonly with about 12–12.5% tin and often with the addition of other metals (including aluminium, manganese, nickel, or zinc) and sometimes non-metals, such as phosphorus, or metalloids such as arsenic or silicon. These additions produce a range of alloys that may be harder than copper alone, or have other useful properties, such as strength, ductility, or machinability.
- Nooksack River § Middle Fork (Wikipedia)
The Middle Fork Nooksack River, about 20 miles (32 km) long, originates on the southern slopes of Mount Baker near Baker Pass. It flows generally northwest between Mount Baker and Twin Sisters, and drains into the North Fork opposite Welcome, about 4.5 km (2.8 mi) northeast of the confluence between the North and South Forks.