Complex sentence: The official government re-opening in 1991 featured bulldozers, not ultrasound or hand tools; the professional observer stood by in anguish as non-professionals sloshed through the pit, grabbing at bits of ceramic or bone.
Split into simpler sentences: The official government re-opening in 1991 featured bulldozers, not ultrasound or hand tools. The professional observer stood by in anguish as non-professionals sloshed through the pit, grabbing at bits of ceramic or bone.