Susan,

You will see these big domes in metropoliten areas at ship docks such as in Portland, Tacoma, and Seattle where cement is stored for both import and export. In Portland, Oregon, there is one across the Wilamette River from the trendy Pearl District, formerly an industrial and rail center. But there is also a large export wheat storage facility that has been there for many years within a stones throw of the Broadway Bridge and the Memorial Coliseum.

Zoning policy is mainly dictated by profits, not safety.