American Mules:Martina Evans's eponymous Mules are shoes brought to her as an exotic gift by an American relation. They suggest to her the possibility of a very different world, one which the poems' speakers set out to explore. As happens often in her poems, new and invented experiences throw into relief Evans's own intensely lived experiences: the radiography units of hospitals and their merciless work culture, in which the speakers must survive; a London densely