Small-scale gold mining continued to be a source of controversy.
La minería de oro a pequeña escala siguió siendo una fuente de polémica.
You'll enjoy the gold mining history of this area too.
There is an interesting old gold mining shaft near the start.
However, gold mining was never profitable in the area.
But no inspectors have been assigned to the gold mining sites.
Much of this deforestation appears to be linked to gold mining.
I never knew gold mining was such a messy business.
No sabía que la extracción de oro fuera un trabajo tan complicado.
They even discover time to do some artistic gold mining.
Incluso encuentran tiempo para hacer algo de minería de oro creativa.
Some activists wore antigold badges to show their opposition to gold mining.
Algunos activistas llevaban insignias contrarias al oro para mostrar su oposición a la minería de oro.
Without potassium cyanide, many gold mining operations would be significantly less efficient.
Sin el cianuro de potasio, muchas operaciones de minería de oro serían significativamente menos eficientes.
Knelson centrifuge concentrator for placer gold mining.
Knelson centrífuga concentrador para la minería de oro de placer.
Mercury is not used in artisanal gold mining.
El mercurio no se utiliza en la extracción de oro de forma artesanal.
Manufacturers and suppliers of innovative gold mining equipment...
Fabricante de equipos de la minería de oro...