BRUMADINHO, Brazil—Brazil’s top prosecutor said she would pursue criminal charges against executives at Vale SA, the world’s largest iron-ore miner, and the government said it was ordering inspections at dams across the country after a deadly disaster at one the company owned.
Vale’s shares plunged nearly 25% on Monday and the company said it would suspend dividend payments and share buybacks after the miner’s second deadly dam collapse killed at least 65 people on Friday. Iron-ore prices jumped, fueling speculation of lower...