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Environmental pollution is a major issue which confronts industry and business in today’s world on daily basis. Industrial activities are the leading cause of metals emission, often associated with soil and plant metal concentration in adjacent regions. Cement industry is one of the 17 most polluting industries listed by the central pollution control board (CPCB). Impact of dust deposition from Cement Company of Northern Nigeria on the proximate and phytochemical concentrations of lettuce (Lactuca sativa) was studied. A comparative study of heavy metal concentration and phytochemicals of Lactuca sativa and soil samples from Kalambaina (Industrial area) and Kwalkwalawa (non-Industrial area) were estimated using atomic absorption spectrophotometry (AAS) and standard analytical procedures respectively. Result of quantitative phytochemical analysis revealed significant difference (P<0.05) in all parameters. Heavy metal values of Pb(0.012±0.002 mg/g), Zn(0.043±0.003 mg/g), and Ca(706.860±14.980 mg/g) in Lactuca sativa collected from Kalambaina revealed significant difference (P<0.05) when compare to samples collected from Kwalkwalawa and WHO standard. In addition, the heavy metal concentration in soil collected from Kalambaina showed significant difference (P<0.05) when compare to samples collected from Kwalkwalawa; with the highest value recorded in Ca (974.25±48 mg/g) which might be as a result of activities in the cement industry. Conclusively, plants grown at cement industries might not be safe for consumption

Influence is a primary social mechanism through which a leader enacts his or her leadership using various tactics to influence others. This study is an attempt to investigate the effect of influence tactics on worker’s performance in Dangote Cement Plc, Obajana- Kogi State. Specifically, it was designed to examine the effect of appeal to higher authority; ingratiation; impression management; and persuasion tactics (as the dependent variables) on workers performance. A descriptive-survey research design was adopted, while purposive sampling technique was employed to arrive at a sample size of fifty-eight (58) from the research population of 151 senior staff, frontline managers and management personnel of the organization. Out of the fifty-eight questionnaires administered to the staff, only forty-eight were returned. Multiple regression analysis was used to determine the relationship between the two variables using the regression coefficients (Beta values). Results showed that ingratiation has a negative and insignificant effect on performance; impression management have positive and insignificant effect on workers performance; but appeal to higher authority and persuasion tactics had positive effect on workers performance in Dangote Cement Plc, Obajana- Kogi State. The study recommended that management of the firm should adopt the use of persuasion and appeal to higher authority considering their positive effect on workers performance; the use of ingratiation as an influence tactics should be minimized; and impression management should be encouraged.

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