A group of Environmental Protection Agency employees published a declaration of dissent Monday from the agency’s policies under the Trump administration, saying they “undermine the EPA mission of protecting human health and the environment.”

More than 170 EPA employees put their names to the document, with about 100 more signing anonymously out of fear of retaliation, according to Jeremy Berg, a former editor-in-chief of Science magazine who is not an EPA employee but was among non-EPA scientists or academics to also sign. The latter figure includes 20 Nobel laureates.

The letter represents rare public criticism from agency employees who could face blowback for speaking out against a weakening of funding and federal support for climate, environmental and health science.

Scientists at the National Institutes of Health issued a similar letter earlier in June.

“Since the Agency’s founding in 1970, EPA has accomplished (its) mission by leveraging science, funding, and expert staff in service to the American people. Today, we stand together in dissent against the current administration’s focus on harmful deregulation, mischaracterization of previous EPA actions, and disregard for scientific expertise,” the letter read.

The EPA responded with a statement that said policy decisions “are a result of a process where Administrator (Lee) Zeldin is briefed on the latest research and science by EPA’s career professionals, and the vast majority who are consummate professionals who take pride in the work this agency does day in and day out.”

The letter outlines what the EPA employees see as five main concerns: undermining public trust; ignoring scientific consensus to benefit polluters; reversing EPA’s progress in America’s most vulnerable communities; dismantling the Office of Research and Development; and promoting a culture of fear, forcing staff to choose between their livelihood and well-being.