Hello Andrei, Thanks for your submission. I really like #52. However because this is a construction company, (I build concrete swimming pools) I am after something with strength and solidarity and a bit of design flair. You have the flair but I think the design needs some more strength. When building everybody wants a strong foundation and I would also like this portrayed in the logo. Below I have suggested a few websites for construction and mining companies which demonstrate good examples in my opinion. As I have mentioned to other designers they are to be considered as examples only and I would like my own unique design. (www.aveng.co.za) (www.graniteconstruction.com) (www.akersolutions.com) (www.minepower.com) (www.hubard.com) (www.bhpbilliton.com) (en.shikunbinui.co.il) (www.barminco.com.au) I hope this helps and I would love to see any great ideas you come up, with. Best wishes David