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.
A+E Networks. On this day in 1556, an earthquake in Shaanxi, China, kills an estimated 830,000 people. Counting casualties is often imprecise after large-scale disasters, especially prior to the 20th century, but this disaster is still considered the deadliest of all time.