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.
Mexico City earthquake of 1985, also called MichoacÃ¡n earthquake of 1985, severe earthquake that occurred on Sept. 19, 1985, off the coast of the Mexican state of MichoacÃ¡n, causing widespread death and injuries and catastrophic damage in Mexicoâs capital, Mexico City. The magnitude-8.0 quake occurred at 7:18 am.