In her early work , Larner examined issues of transformation and decay in a series of petri dish cultures that she also photographed . Her subsequent installations and sculptures address the way an object defines the space it occupies and transforms the viewer 's perception of that space . '' Damage Control '' ( 1987 ) is a two-foot-square block of hazardous substances . Its list of materials includes saltpeter ( an ingredient in gunpowder ) , ammonium nitrate ( used in the Oklahoma City bombing ) and TNT itself . '' Used to Do the Job '' ( 1987 ) consists of two rough-hewn cubes stacked on top of each other ; the bottom one is made of solid lead , the top one of almost solid wax and paraffin - suspended within are all the ingredients needed to make a time bomb
Oklahoma City bombing
Oklahoma City bombing
Liz Larner