As a result of his work on the railroad, Andre abandoned carving and began constructing works out of found materials, consciously exposing their natural character.
Andre used symmetrical, unitary elements and systems based on modular repetition. There was a careful attention to the physical process of making a work, through the adoption of task-like procedures. The intention was to stress the autonomy of the object as a new entity. According to Barbara Rose, who was one of the first to use the term "Minimal art," these works simply offered an entirely new and different set of experiences in which perception, not emotion, was the focus.