A portable cooler is provided that includes a base that supports a refrigeration unit. The base also supports a plurality of upwardly-extending support poles that accommodate a top portion. The support poles, top portion, and base define a food storage volume that is surrounded by a plurality of insulative walls.

A method for off-site manufacture of prefabricated monolithic fireplaces etc comprising a plurality of concrete blocks; the method comprising the steps of constructing a first layer of blocks, providing a steel frame and securing the same to the blocks and to a second layer of blocks constructed atop the first layer, and constructing additional layers of blocks sequentially atop the second layer each block being adhesively secured to each of its adjacent blocks.

A construction element includes concrete and a first wall, where the first wall is made out of armor plate and arranged with at least one anchor. A method for improving the security of a safety cabinet is also provided.

A construction element includes concrete and a first wall, where the first wall is made out of armor plate and arranged with at least one anchor. A method for improving the security of a safety cabinet is also provided.