The land to the north of the Gila River, in United States territory, was too mountainous. President Pierce instructed the American minister to Mexico, James Gadsden, to purchase as much territory in northern Mexico as possible.
A bollard is a short post designed to identify or segment a location, guide traffic or protect sensitive areas. It provides an effective visual barrier for vehicles and pedestrians and can offer significant impact protection where effective security is required.
Block out-To install a box or barrier within a foundation wall or slab to prevent. the concrete from entering an area (i.e. foundation walls are sometimes âblockedâ. so mechanical pipes can pass through the wall, to install a crawl space door, and. depress the concrete at a garage door location). Bollard-One of a series of short posts preventing vehicles from entering an area.