Serving as engineer, salesman and president, he built the company into a leader in automated material handling systems.

By 1980, he had served as engineer on more than 7,000 recordings.

Dave Cassels has served as engineer for many years.

He served as chief engineer of the Sixth Army in 1943-1946.

With other industrial and government organizations, he has served as chief engineer, director of research, and consultant.

He first served at sea as chief engineer aboard the destroyer Clark.

Prior to coming to the US, he served as chief engineer on merchant ships.

From 1929 to 1940, he served as chief engineer for aviation insurance underwriters.

He served with the Board of Works as consulting engineer.

He served as chief engineer of the Fire Department in 1852-1854 and its president from 1855-1857.