RPM is the acronym used for revolutions per minute. It measures the number of revolutions completed in one minute around a fixed axis, giving the speed of a mechanical component. It is commonly used to describe the performance of automobile engines.
Like most ballparks built from the 1990s onward, Safeco Field is a 'retro-modern' style ballpark that incorporates many of the features of ballparks built in the 1950s and earlier with modern amenities.
The Merchandise Mart, owned by Marshall Field & Co. , opened on May 5, 1930, just east of Chicago's original trading post, Wolf Point. The building realized Marshall Fieldâs dream of a single wholesale center for the entire nation and consolidated 13 different warehouses.