Conducting surveys; ecological surveys; engineering surveying; engineering surveys and inspections; geological surveys; geophysical surveys; hydrographic surveying; inspection of buildings (surveying); land surveying; land surveys; oil-field surveys; provision of surveys (technical); surveying; surveying of land; technical survey services; topographical surveying; geological estimation and research; engineering consultancy; analysis for oil field exploration; analysis for oil-field exploitation; preparation of engineering reports; preparation of technical reports; provision of engineering reports