Dam breaches

FILE - In this Jan. 28, 2019 file photo, a helicopter carrying a body pulled from the mud, days after a Vale dam collapsed, flies over a cemetery with two open graves in Brumadinho, Brazil. Lax regulations, chronic short staffing and a law that muffled the voices of environmentalists on mining licenses made the collapse all but destined to happen, experts and legislators say. (AP Photo/Leo Correa, File)

Helicopters hover over an iron ore mining complex to release thousands of flower petals paying homage to the dozens of victims killed and scores of missing after a mining dam collapsed there a week ago, in Brumadinho, Brazil, Friday, Feb. 1, 2019. (AP Photo/Andre Penner)

Friends and relatives hold signs with the names of victims, during a march paying homage to the victims of a mining dam collapse a week ago, in Brumadinho, Brazil, Friday, Feb. 1, 2019. A spokesman for the Minas Gerais Fire Department said after the ceremony that authorities were not calling off the search for bodies although no one had been found alive since Saturday. (AP Photo/Andre Penner)

A woman who lost a relative lights candles outside a church after a Mass for the victims of a mine dam collapse in Brumadinho, Brazil, Thursday, Jan. 31, 2019. The dam failure unleashed a surge of mud that buried buildings adjoining the dam and several parts of the nearby city of Brumadinho. (AP Photo/Andre Penner)

Tereza Ferreira Nascimento, center, her sister-in-law Sonia Santos, left, and her brother Pedro Ferreira dos Santos dig with garden tools in search of the body of Tereza's and Pedro's missing brother Paulo Giovane Santos, days after a mining company's dam collapsed in Brumadinho, Brazil, Wednesday, Jan. 30, 2019. "We are here since Friday taking turns between brothers, brothers-in-law, searching for the body so that we can at least give him a dignified burial,” said Nascimento, holding back tears. “So far it has been in vain.” (AP Photo/Andre Penner)

An aerial view shows a collapsed bridge caused by flooding triggered by a dam collapse near Brumadinho, Brazil, Friday, Jan. 25, 2019. The dam that held back mining waste collapsed, inundating a nearby community in reddish-brown sludge, killing at least seven people and leaving scores of others missing. (Bruno Correia/Nitro via AP)

Friends and relatives attend the burial of Vale SA employee Edgar Carvalho Santos, victim of the collapsed dam in Brumadinho, Brazil, Tuesday, Jan. 29, 2019. Officials said the death toll was expected to grow "exponentially," since no had been rescued alive since Saturday. (AP Photo/Andre Penner)

Firefighters pull a body from the mud days after a dam collapse in Brumadinho, Brazil, Monday, Jan. 28, 2019. Firefighters on Monday carefully moved over treacherous mud, sometimes walking, sometimes crawling, in search of survivors or bodies four days after a dam collapse that buried mine buildings and surrounding neighborhoods with iron ore waste. (AP Photo/Leo Correa)

Firefighters are resupplied as they search for victims of a dam collapse in Brumadinho, Brazil, Monday, Jan. 28, 2019. Firefighters on Monday carefully moved over treacherous mud, sometimes walking, sometimes crawling, in search of survivors or bodies four days after a dam collapse that buried mine buildings and surrounding neighborhoods with iron ore waste. (AP Photo/Leo Correa)

Rescue work try to reach a cow that is stuck in a field of mud, two days after a dam collapse in Brumadinho, Brazil, Sunday, Jan. 27, 2019. Brazilian officials on Sunday suspended the search for potential survivors of a dam collapse that has killed at least 40 people amid fears that another nearby dam owned by the same company was also at risk of breaching. (AP Photo/Andre Penner)