California-basedKhang & Khang LLP has filed a class-action lawsuit against as the company allegedlyissued misleading statements covering its implementation of safety precautions despiteknowing the dangerous condition of the Samarco iron ore mine in Brazil, according to an April 8release.

Samarco is operatedby Samarco Mineração SA,a joint venture between BHP Billiton and ValeSA.

A at the site in November2015 killed about 19 people.

Khang &Khang is encouraging investors who acquired shares of the company between Sept.25, 2014, and Nov. 20, 2015, to contact the firm.