Quest Chains for Black Rock Depths

(Dead in BRM) Dark Iron Legacy
The Love Potion
(Kargath) Lost Thunderbrew Recipe
(Searing Gorge) Divine Retribution ->>>>>>>>>>> A Taste of Flame
(Kargath) Commander Gor'shak
(Kargath) Disharmony of Fire
(Kargath) KILL ON SIGHT: Dark Iron Dwarves
(Burning Steppes) Ribbly Screwspigot
(Kargath) The Rise of the Machines

Mail with +damage

Head : Carrion Scorpid Helm +26dam/heal, king in DM North
Head : Coif of The Five Thunders +14dam/heal, 1%crit, 0.5 set
Neck : Orb of the Darkmoon +22dam/heal, faire
Shoulder : Denwatcher's Shoulders +18dam/heal, guards in DM North
Chest : Vest of The Five Thunders +14dam/heal. 1%crit, 0.5 set
Belt : Barrage Girdle +23dam/heal, cannon master in live strat
Legs : Silvermoon Leggings +18dam/heal, prince in DM west
Feet : Greaves of Withering Despair +11dam/heal, 1%hit, interrogator in BRD
Wrist : Modest Armguards +12dam/heal, guards in DM north
Hands : Dracorian Gauntlets +16dam/heal, baron in strat
Ring : Don Mauricio's Band of Domination +11dam/heal, 1%crit, gandling in scholo
Ring : Maiden's Circle +18dam/heal, BoE world blue
Trinket : Briarwood Reed +29dam/heal, Jed (rare) in UBRS
Trinket : Royal Seal of Eldre'Thalas +23dam/heal, DM
Back : Crystalline Threaded Cape +20dam/heal, BoE blue from elemental summoning in Silithus
Shield : Draconian Aegis of the Legion +20dam/heal, 0.5 quest spawn in UBRS

Quest Chains for Sunken Temple

(Feralas) The Sunken Temple ->> Into the Depths
(Get the egg chained from ZF) The God Hakkar
Pool of Tears ->>> The Temple of Atal'Hakkar
(Un'goro Crater) Larion and Muigin ->> Zapper Fuel

ALSO

Most if not all classes have a level 50 minimum quest that ends in Sunken Temple. Make sure you do the prereqs for it. (Your class trainer should point you towards them.)

Corruption of Earth and Seed
Legends of Maraudon
(Orgrimmar) Shadowshard Fragments
The Pariah's Instructions
Twisted Evils
Vyletongue Corruption