When I spotted two men were being paid more money but doing equivalent jobs to mine, I raised it with my manager.
The 60 million cubic meters of mine waste, equivalent to 25,000 Olympic swimming pools, cut off drinking water for a quarter of a million people.
In a decade the combined sites could churn out 8m tonnes of potash annually, twice the output of the world's largest mine and equivalent to a just under a sixth of global consumption.
The 60m cubic meters of mine waste (equivalent to 25,000 Olympic swimming pools) killed at least 13 people and left hundreds homeless as it swept through villages and polluted the 800km River Doce, depriving local people of their water source and killing thousands of fish.
Using innovative and proprietary science, the result is equivalent to D-Color and flawless grade mined diamonds.
In a sense, one could think of journalists as equivalent to a canary in a coal mine.
Rémi Cousin received his degree in engineering from l'Ecole Nationale Supérieure des Mines de Nancy (equivalent to a master's degree), with majors in geo-sciences, in 2005.
The block model contains information on useful or exploitable slate content, which is equivalent to metal content for the traditional mining sectors.
We measured the concentrations of major and trace elements within the tributaries and the mainstem and found that upstream of the mines water quality was equivalent to state reference sites.
Earlier this week, Humala's prime minister, Salomón Lerner Ghitis, announced a new tax on the mining industry's "surplus earnings" equivalent to more than $1bn a year in additional government revenues.
It is a concept equivalent to the support, used in the association rule mining literature.
