On 4 february 1975 , the commune or brigade leading cadres would have obtained information directly or indirectly from six different sources : ( 1 ) the general provincial warning relayed to them through city and county committees , ( 2 ) in the case of yingkou county , an evacuation order from the county committee , ( 3 ) nearby earthquake observatories , particularly the shipengyu observatory , ( 4 ) local amateur precursory monitoring groups such as the team of the haicheng observatory , ( 5 ) neighboring villages and industrial units , and ( 6 ) the foreshocks and the damage they were already causing 1975年2月4日，公社或大队领导干部直接或间接从六个不同的来源获得信息： （ 1 ）通过市级与县级革委会传达给他们的总的省一级的警告； （ 2 ）在营口的例子中，撤离的命令由县革委会下达； （ 3 ）附近的地震观测站，特别如石硼峪地震观测站的情况； （ 4 ）地方的业余前兆检测工作组，如海城地震观测站（ “群测点” ） ； （ 5 ）附近的村庄与企业，与（ 6 ）前震以及已经造成的损失。
