Born into the steamwheedle family gravin was a born economist and tinkerer he created and marketed advanced shredder conversion kits and established principals of indefinite exploitation by which lumber harvests were not permanent desecrations of the land and infact yeilded beter land for regrowth than normal. With such success came several failures including the incident that disgrunted many of the zeplin runners now in horde employ. He had once met a shaman who showed him how to weave the elements into his work, As well as a respect for the world that was rare among goblins never failing in his forethought ambition he forged deals with earth elementals for mineral replenishments that allowed him to apply indefinite exploitation to the many mines he worked into the contracts.
Gravin also saw the leigion as an imense threat to buisiness and took endevors against while simultaniously learning from it and its defector mo'rag that had freed their minds great and dark engineering secrets. Such as the construction of fel reavers . Gravin also made a device of magic and technology that drained and filltered magical energies into less corupting forms fel to arcane, arcane to spiritual. These devices were used on grell and rebel mo'rag to purify them (and hold some spare energy),and used to emower goblins who had defeated demons without corrupting the goblins.