Summary form only given. We will present results of recent experiments with wire array Z-pinches performed on the 1 MA MAGPIE generator. These will include measurements of the precursor plasma column by X-ray radiography, measurements of axially resolved K-shell Al spectra (both time-integrated and time-resolved), and measurements of the spatial structure of the stagnated plasma. We will discuss correlations between the structures of the stagnated pinch and the structures seen in the trailing plasma. We will also present experiments with radial wire array Z-pinches