August 17, 2015: China's government ordered a nationwide check of workplace safety Monday to correct any irregularities five days after huge explosions at a warehouse in the port city of Tianjin killed at least 114 people and left 70 others missing.

The directive from the Ministry of Industry and Information Technology lamented the frequency of fatal workplace accidents and demanded a thorough inspection of all safety risks.

Meanwhile, prosecutors were ordered to investigate possible dereliction of duty and abuse of power that may have contributed to Wednesday night's blasts.

"We must thoroughly investigate (the incident) and hold accountable all those responsible," state media quoted Premier Li Keqiang as saying. "We must give an answer for families of the victims, an answer for all residents of Tianjin, an answer for all Chinese people, and an answer for history."

About 100 people whose residences were damaged by the explosions gathered Monday to demand compensation from the government.

Wednesday's blasts originated at a warehouse for hazardous material, where 700 tons of sodium cyanide - a toxic chemical that can form combustible substances on contact with water - was being stored in amounts that violated safety rules. That has prompted contamination fears and a major cleanup of a 1.8-mile-radius, cordoned-off area in the Chinese port city southeast of Beijing.

Chinese work safety rules require such facilities to be at least 3,300 feet away from residences, public buildings and highways. But online map searches show the Ruihai International Logistics warehouse was within 500 meters of both an expressway and a 1 million-square foot apartment complex. Those apartments' walls were singed and its windows were shattered, and all residents have been evacuated.

"We victims demand: Government, buy back our houses," said a banner carried by the residents outside the Tianjin hotel where officials have held daily news conferences about the disaster. "Kids are asking: How can we grow up healthy?" read another banner.

Tianjin officials have been hard-pressed to answer how the warehouse was allowed to operate in its location. Questions also have been raised about management of the warehouse, and the country's top prosecuting office announced Sunday that it was setting up a team to investigate possible offenses related to the massive blasts, including dereliction of duty and abuse of power. Ruihai's general manager is in a hospital under police watch.

Bian Jiang, a resident of one of the nearby housing complexes, said he was asleep when the first explosion struck Wednesday shortly before midnight.

"Twenty seconds later I heard the second explosion and saw the rising mushroom cloud. Then, I was thrown out of bed by the force of the blast. I was wondering if we would able to get out alive," he said, adding that his home is now ruined. "All the windows are gone."

The blasts claimed the lives of at least 114 people, with 70 still missing, including 64 firefighters and six policemen, Tianjin government spokesman Gong Jiansheng told a news conference Monday.

On Monday, He Shushan, a deputy mayor, confirmed there was 700 tons of toxic sodium cyanide on the site at the time of the blasts, although authorities said there have not been any substantial leaks. Authorities also said they had sealed all waterways leading into the sea from the blast site and built retaining walls to prevent any runoff.

Sodium cyanide can form a flammable gas upon contact with water, and several hundred tons would be a clear violation of rules cited by state media that the warehouse could store no more than 10 tons at a time.

The ministry's directive ordered government authorities at all levels to check whether companies within their jurisdiction that produce and store hazardous materials comply with safety regulations, including if they are a safe distance from residential areas and do not exceed storage limits.

The death toll includes at least 21 firefighters - making the disaster the deadliest for Chinese firefighters in more than six decades - and their toll could go much higher because 64 remain missing. About 1,000 firefighters responded to the disaster.

The public has raised concerns about whether firefighters were put into harm's way in the initial response to the fire and whether the hazardous material was properly taken into account in the way the firefighters responded.

The massive explosions happened about 40 minutes after reports of a fire at the warehouse and after an initial wave of firefighters arrived and, reportedly, doused some of the area with water.

The Tianjin blasts are among the deadliest industrial accidents in China in recent years. In June 2013, a fire at a poultry plant in the northeastern province of Jilin killed 121 people. In August 2014, a dust explosion at a metal plant in the eastern province of Jiangsu left 97 people dead.