Dan Bouk at Asterisk: Flipping through the rest of the book, I learned that pumps in water works have an “average life” of 21. 3 years compared to only 5. 3 years for telephone switchboards.
3 years for telephone switchboards. The life of an electric lamp is better expressed in hours (around a 1,000) than years. A railroad tie made from.
A railroad tie made from.