On July 28, 1976, an earthquake struck Tanshang China. This earthquake caused the most damage of any modern earthquake and registered a 8.3 on the Richter Scale. The official number of deaths was 255,000, but it was estimated that 655,000 actually perished in the disaster, and 164,000 were severely injured. Approximately ninety percent of all infrastructure was destroyed and took about ten years to rebuild. The earthquake lasted approximately fourteen to sixteen seconds. There were signs occurring before the earthquake struck. Three days before the earthquake struck well water in the city rose and fell, and in a neighboring village gas began to sprout from water wells too. Not only did water levels indicate a disaster was on the way but so did the animals. Apparently over one thousand chickens refused to eat or drink and rodents were running around seeking shelter.