Story So Far:
    Spurred by mutiny of Nibirans toiling in the goldmines of Zimbabwe, Nibiru’s King Anu and his Council allowed Enki, Ninmah and Ningishzidda to graft Nibiran genes with apeman genes and clone Earthling slaves to replace Nibiran goldminers.  

Ningishzidda discovered the genes in the Nibiran genotype that allow reproduction. "From the rib of Enki the life essence he extracted; into the rib of Adamu the life essence he inserted.  From the rib of Ninmah the life essence he extracted; into the rib of Ti-Amat the life essence he inserted." [Sitchin, Z., 2002, The Lost Book of Enki, page 148]

Narrative Resumes
       In Zimabawe, Enki settled Adamu and Ti-Amat in a forest enclosure.  Ti-Amat bore the twins she'd conceived with Adamu. She bore other children who interbred and multiplied till they took over the work in the goldmines.  Sitchin identifies the species descended from Adamu, Ti-Amat and the Nibiran gene donors as Homo Erectus and Neandertalensis [Sitchin, Z., 1995, Divine Encounters, page 47].
 

In a few thousand years, "the Earthlings were proliferating....To be with the Anunnaki [Nibiran astronauts] they were eager, for food rations they toiled well. Of heat and dust they did not complain, of backbreaking they did not grumble.  Of hardships of work the Anunnaki were relieved.  The vital gold to Nibiru was coming, Nibiru’s atmosphere was slowly healing." [Sitchin, Z., 2002, The Lost Book of Enki, page 151] The descendents of the earliest hybrids "created as slaves to work  in the mines "were given food and shelter while they performed some grueling tasks, the reason for which they did not understand.  The stuff [gold] they were digging up had absolutely no value to them. They could not eat it, or use it in any way." [Tellinger, M., 2006, Slave Species of god, page 125]

Nibiru, recall, until 10,000B.C.E., revolved at that time around the Sun every 3,600 years in a long elliptical clockwise orbit.  When closest to the Sun (perigee), Nibiru's rockets can most easily visit Earth.  But also at perigee, Nibiru 's netforce sometimes disturbed the planets of the inner solar system.

One of Nibiru's orbital nearings to the Sun disturbed the atmosphere, volcanoes and earthquakes on Earth and Mars.  King Anu visited Earth from Nibiru and inspected damage. 

Anu suspected Enki had abetted the Igigi Astronaut revolt Anzu led. The King also thought Enki instigated the miners' revolt in Africa. So the King stopped gold transshipment from Mars and also favored the Enlil lineage--sons of Enlil and their children--over the Enki lineage. As a slap at Enki, Anu when he ended gold transfer on Mars, Anu simultaneously abolished the post Operations Boss, Marsbase, that Enki’s son Marduk held. Enki and Marduk thus lost their contol of Mars.
 

King Anu further favored Enlil’s lineage; he awarded rule of new spaceport (from which the gold would directly rocket to Nibiru) at Sippar to Enlil’s son's son Utu (the first Earth-born Nibiran). 

Anu ruled, Earthlings multiplying in Abzu [Africa] must assist excavation, transport, refining gold till after several shars [3,600 year revolutions of Nibiru around Solaris] sufficient will be the shield of Earth’s gold powder to save Nibiru. Then home shall the heroes [astronauts] from Earth return.

At one point, Earthling slave-miners in South Africa--after 100,000 years of toil to extract what seemed to them to be an intrinsically unimportant substance, gold--revolted. Nibiran gods let many of the slaves "leave the mining compounds."  Other slaves continued mining for the Nibiran gods, while still other "slaves tried to live in newly formed communities and survive without the help of the gods [Nibirans]." [Tellinger, M., 2006, Slave Species of god, page 117.]

NINURTA RETURNS EARTHLING SLAVES TO EDIN

But after forty orbit nearings [144,000 years, forty perigees] of the homeplanet, most of the Nibirans in Mesopotamia--but not their boss, Enlil--wanted Earthlings to work for them too.

“In Africa where the first humans were created, they lived and slaved in isolation from other emerging human communities and they established their own unique cultures, highly influenced by their master ‘gods’.” This isolation in Africa with but a few role-model gods, accounts for the huge differences in the religions and mythologies of Africans and the religions and mythologies of humans elsewhere. “There was very little contact between these early humans in Africa and the rest of the world, where interbreeding," --started en masse by a raid Ninurta led--took place “between humans and the offspring of the Anunnaki, giving rise to the Aryans of the north.” [Tellinger, M., 2006, Slave Species of god, page 117.]