Since 1985 , the Topos have assisted rescue and recovery efforts in over twenty-two countries . On volunteers ´ uniforms one can see written where s/he has been to help . One of the first was the 1986 San Salvador earthquake , only one year after the earthquake that was the impetus for the group 's founding . Within Mexico , they have assisted after disasters in Manzanillo , Puebla and Oaxaca . They usually travel by commercial airliner , which limits equipment to thirty kilograms per person . Most of this equipment is simple , such as picks , drills and eyebolts
1986 San Salvador earthquake
1986 San Salvador earthquake
Topos de Tlatelolco