Desperate Venezuelans and rescue teams raced to find survivors on Friday as the death toll from twin earthquakes rose above 1,400 with foreign crews and aid only beginning to reach devastated areas nearly two days after the quakes.The government said 172 people remained trapped, 1,430 were dead and 3,360 injured after the quakes devastated parts of Caracas and surrounding areas on Wednesday evening. More than 50,000people were reported missing.The ground shook once again Friday afternoon, a weaker 4.9 temblor that was felt in the capital Caracas and nearby Maracay. Frustration mounted over the uneven pace of relief in some of the hardest-hit areas including La Guaira state, where residents and volunteers were still digging through rubble by hand amid shortages of heavy equipment and limited official presence.Jennifer Palacios, 25, said her 6-year-old son and five other relatives remained buried in La Guaira city’s eight-tower Hugo Chavez housing complex.“It’s the community that has managed to get people out alive,” she said. “We need them to bring cranes to move the slabs. There are still people trapped.”The disaster could have political consequences for interim President Delcy Rodriguez, who has sought to portray herself as an agent of political change even though she served as Vice-President to the ousted Nicolas Maduro.A UN report estimated direct damage from the two quakes, magnitude 7.2 and 7.5, at about $6.7 billion. The second quake was Venezuela’s most powerful in more than a century.World steps up aidForeign rescue teams — including some from countries long at odds with Venezuela — began arriving late on Thursday and into Friday.Rodriguez spoke by phone with US President Donald Trump and Secretary of State Marco Rubio on Friday. Earlier she and other officials met with the US military’s Northern Command and disaster experts.The US said it was mobilising $150 million in aid and easing sanctions while the US military dispatched two ships and said helicopters and aircraft would support rescue efforts.In the beachside neighborhood of Los Corales, 50 members of El Salvador’s rescue team were assessing the ruins of three 10-story buildings using drones, heat scanners and dogs to locate survivors.