英和和英

rake gravel

alluvial mining―placer mining

mining industry

a method of mining, called {open-air mining}

lay mines

lay mines

the mining industry

the mining industry

opencast mining

opencast mining

a wildcat mine

to strike a lead―strike ore

to strike a lode

laying the corner-stone

a place where sand is gathered, called a sand pit

a kind of pick that is used for digging

to drive a tunnel through a mountain

scraps of straw

haul stones

to dig trenches―entrench oneself―dig oneself in―sap

a method of mining called bench mining

a mining enterprise

a method of mining using a mine shaft

torrential gravel

sand grouse

mine-pillars

to dig for coal―mine coal

shovel sand

fragmental rock

the laying of the corner-stone