Im really interested in factories, large factories tend to be located with access to many modes of transportation.
oh yea? well can you tell me a bit about them
Yeah factories have access to rail, highway, and even water loading and unloading facilities.
oh wow i didnt know that
Rail freight transport
Rail freight transport is the use of railroads and trains to transport cargo as opposed to human passengers.
A freight train or goods train is a group of freight cars (US) or goods wagons (International Union of Railways) hauled by one or more locomotives on a railway, transporting cargo all or some of the way between the shipper and the intended destination as part of the logistics chain. Trains may haul bulk material, intermodal containers, general freight or specialized freight in purpose-designed cars.
workshops".
Most modern factories have large warehouses or warehouse-like facilities that contain heavy equipment used for assembly line production. Large factories tend to be located with access to multiple modes of transportation, with some having rail, highway and water loading and unloading facilities. 
Factories may either make discrete products or some type of material continuously produced such as chemicals, pulp and paper, or refined oil products. Factories manufacturing chemicals are often called "plants" and may have most of their equipment – tanks, pressure vessels