they place explosives in the cave wall and via small trains trucks or elevators they bring the rocks to the surface. the miners can always differ from it but these are the mostly used ways for doing the job.
behind some rocks
Yes they do. Toe caps protect the boots from impact and compression, so they protect against falling rocks or if the miners feet get trapped under rocks.
Opal is typically extracted from the earth through open-cut mining or underground mining methods. Miners use heavy machinery to remove overburden and dig into the opal-bearing layers, where they extract the opal-bearing rocks. These rocks are then processed to extract the opal gemstones.
Rock-forming minerals are the 20 most common minerals on Earth. However, 10 minerals actually make up 90 percent of the Earth's crust. We refer to these 10 minerals as "grains".
People made holes in the soil and rocks and pushed the food into it.
Lunar rocks are those forming the Moon - as the word 'lunar' says. Earth rocks are formed on Earth - but the rock forming the Moon is also a constituent of the Earth.
So that flying rocks or other items don't break the glass of the lantern.
gold sand stone is a ston that wasfound in the 1867 when the miners had found it in a cave/rocks
The three main types of rocks on Earth are igneous, sedimentary, and metamorphic rocks. Igneous rocks are formed from the cooling and solidification of magma or lava. Sedimentary rocks are created from the accumulation and compaction of sediment particles. Metamorphic rocks are rocks that have undergone changes in temperature and pressure, often deep within the Earth's crust.
Yes, rocks are part of geology, which is an earth science.
Rocks were brought back to the Earth from the various Moon landings the Americans undertook. No other rocks from the Moon are on Earth. The Moon was formed from the Earth - so, if anything, there are Earth rocks on the Moon.
The rock is likely an igneous rock, formed from the cooling and solidification of magma. This process typically occurs deep within the Earth's crust. Igneous rocks can provide valuable information about the Earth's geological history and the processes that have shaped it.