What other objects might have been used instead of a steamroller and the rubble it is crushing?

Instead of a steamroller, a heavy bulldozer could have been used to flatten the rubble, as it can effectively push and level debris. Alternatively, a compactor or plate tamper might serve to compact the material, although they would be less effective for larger volumes. Another option could be a large excavator with a bucket attachment to move and crush the rubble. Each of these alternatives would achieve similar goals of leveling and compacting the surface.