The jobs that lure Mexican workers to the United States are killing them in a worsening epidemic that is now claiming a victim a day, an Associated Press investigation has found.

Though Mexicans often take the most hazardous jobs, they are more likely than others to be killed even when doing similarly risky work.

The death rates are greatest in several Southern and Western states, where a Mexican worker is four times more likely to die than the average U.S.-born worker.

These accidental deaths are almost always preventable and often gruesome: Workers are impaled, shredded in machinery, buried alive. Some are 15 years old.

For the first such study of Mexican worker deaths in the United States, The AP talked with scores of workers, employers and government officials and analyzed years of federal safety and population statistics.

Among the findings:

• Mexican death rates are rising even as the U.S. workplace grows safer overall. In the mid-1990s, Mexicans were about 30 percent more likely to die than native-born workers; now they are about 80 percent more likely.

• Deaths among Mexicans in the United States increased faster than their population. As the number of Mexican workers grew by about half, from 4 million to 6 million, the number of deaths rose by about two-thirds, from 241 to 387. Deaths peaked at 420 in 2001.

• Though their odds of dying in the Southeast and parts of the West are far greater than the U.S. average, fatalities occur everywhere: Mexicans died cutting North Carolina tobacco and Nebraska beef, felling trees in Colorado and welding a balcony in Florida, trimming grass at a Las Vegas golf course and falling from scaffolding in Georgia.

• Even compared to other immigrants, what's happening to Mexicans is exceptional in scope and scale. Mexicans are nearly twice as likely as the rest of the immigrant population to die at work.

Why is all this happening?

Public safety officials and workers themselves say the answer comes down to this: Mexicans are hired to work cheap, the fewer questions the better.

They may be thrown into jobs without training or safety equipment. Their objections may be silent if they speak no English or are here illegally. And their work culture and Third World safety expectations don't discourage risk-taking.

Federal and state safety agencies have started to recognize the problem. But they have limited resources — only a few Spanish-speaking investigators work in regions with hundreds of thousands of recent arrivals — and often can't reach the most vulnerable Mexican workers.