The horse was domesticated on a broad scale by 3103 BC.
A grab is a mechanical device with two or more jaws -LRB- also called clamshells -RRB- , used to pick things up or to capture things .. mechanical device. mechanical device. Some types include  :. Roundnose grab. Clamshell grab. Orange-peel grab. in Dutch and German they are called poliep grijpers  /  Polypengreifer = `` polyp grabs '' .. polyp. polyp. There are different ways of open / close the grabs  :. electro-hydraulic  /  diesel-hydraulic. mechanical by rope -LRB- s -RRB- -LRB- 1-rope , 2-ropes , 3-ropes , 4-ropes -RRB-. Grabs can be used for  :. dredging. bulk handling -LRB- e.g. loading / unloading ships -RRB-. salvage -LRB- e.g. ship-wrecks , oil -RRB-. Category  : Tools