Orc dig sites can be found in Outland only and there is only one rare item.

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Below are WoW Dig Site Articles, separate pages dedicated to each listed Artifact.
Artifact	Notes	Skill
Headdress of the First Shaman	Level 61 Mail Head	300+

Below are Orc Common items with Wowhead links.

Common Artifact Links:
Tiny Bronze Scorpion
Skull Drinking Cup
Tile of Glazed Clay
Gray Candle Stud
Fiendish Whip
Scepter of Nekros Skullcrusher
Rusted Steak Knife
Maul of Stone Guard Mur’og
Fierce Wolf Figurine