1. Zakład Robót Regulacyjnych Jeziorek Piotr Dziubek Leszek 2. Zakład Eksploatacji Kruszyw i Robót Ziemnych Jeziorek Piotr, Jeziorek Sławomir, Dziubek Leszek s.c.

08.12.Z - Operation of gravel and sand pits; mining of clays and kaolin

08.11.Z - Quarrying of ornamental and building stone, limestone, gypsum, chalk and slate

39.00.Z - Remediation activities and other waste management services

41.20.Z - Building works related to erection of residential and non-residential buildings

42.11.Z - Works related to construction of roads and motorways

42.12.Z - Works related to construction of railways and underground railways

42.13.Z - Works related to construction of bridges and tunnels

42.91.Z - Works related to construction of water projects

43.11.Z - Demolition

43.12.Z - Site preparation

43.13.Z - Test drilling and boring

43.99.Z - Other specialised construction activities not elsewhere classified

45.11.Z - Sale of cars and light motor vehicles

45.19.Z - Sale of other motor vehicles, excluding motorcycles

45.31.Z - Wholesale trade of motor vehicle parts and accessories, excluding motorcycles

45.32.Z - Retail trade of motor vehicle parts and accessories, excluding motorcycles

46.63.Z - Wholesale of mining, construction and civil engineering machinery

46.66.Z - Wholesale of other office machinery and equipment

46.69.Z - Wholesale of other machinery and equipment

46.73.Z - Wholesale of wood, construction materials and sanitary equipment

49.41.Z - Freight transport by road