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  • Historic Sentinels of Safety Winners -

    Here are the past Sentinels of Safety Winners: YEAR CATEGORY MINE NAME COMPANY NAME TOWN STATE HOURS 1925 QUARRY GROUPRead More

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  • More on identifying rocks & minerals

    Granite: Don't know what it looks like? Go to your local graveyard and look at the polished tombstones that maintain their new look almost indefinitely.

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  • Historic Sentinels of Safety Winners -

    Here are the past Sentinels of Safety Winners: YEAR CATEGORY MINE NAME COMPANY NAME TOWN STATE HOURS 1925 QUARRY GROUPRead More

    Read more

  • Historic Sentinels of Safety Winners -

    Here are the past Sentinels of Safety Winners: YEAR CATEGORY MINE NAME COMPANY NAME TOWN STATE HOURS 1925 QUARRY GROUPRead More

    Read more

  • Crushed Stone: Limestone, Granite, Traprock

    Crushed stone is the mineral commodity upon which everything is built. It is used heavily in construction, manufacturing, chemical and agricultural industries ...

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