I am taken from a mine, and shut up in a wooden case, from which I am...

I am taken from a mine, and shut up in a wooden case, from which I am never released, and yet I am used by almost everybody.

Answer: pencil lead

#Long #Medium

I am taken from a mine, and shut up in a wooden case, from which I am...
I am taken from a mine, and shut up in a wooden case, from which I am...
I am taken from a mine, and shut up in a wooden case, from which I am...

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Next riddle in: Long Riddles

When I am visible to you, you cannot see me, but when I am invisible, you long to see me. I am plenty with someone patient, but all the more scarce with a hasty one. I am greater than all, but still in the control of those who value my existence. Who am I?

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Next riddle in: Medium Riddles

How many 9's are there between 1 and 100?

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