And then there are the M-Disk: http://www.extremetech.com/computing/92286-m-disc-is-a-dvd-made-out-of-stone-that-lasts-1000-years. USD DOD test: http://www.mdisc.com/uploads/M-DISC_1sheet_ChinaLake_vF.pdf. Down side, requires writer that is M-Disk capabale, and disk are expensive (ie about 3 bucks per disk.
The Shaanxi earthquake's epicenter was in the Wei River Valley in Shaanxi Province, near the cities of Huaxian, Weinan and Huayin.
Written By: Typhoon NinaâBanqiao dam failure, catastrophic dam failure in August 1975 in western Henan province, China, caused by a typhoon (tropical cyclone). The ensuing floods caused more than 150,000 casualties, making it one of the deadliest typhoon disasters in history. 1  The Banqiao Dam had been built on the Ru River in the early 1950s as part of a flood-prevention and electricity-production program aimed at controlling the Huang He (Yellow River).