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Mormugao Port Trust (MPT) handles 1087 t/h of coal with the help of 6 mooring dolphins situated at around 600-m distance in sea from the port next to the city of Vasco da Gama, Goa, India. During the said operations, the particles are released at lower height (2 to 5 m from sea water level) unlike other emissions. Since the city is situated next to the port, particles released during the handling of coal reach the Vasco city due to dispersion and affect health of the people in the city. The objective of this study was to identify the key variables which affect the dispersion of the particles released during coal loading and unloading operations. Detailed simulation studies are carried out to study the effect of wind speed, atmospheric temperature, atmospheric humidity, moisture content of coal, and the release height of the material from cranes, on dispersion of particles. For this purpose AERMOD software was used. All the necessary data required for the study was collected from Mormugao Port Trust, Vasco, Goa. Wind speed and moisture content of materials are key variables identified as they influence the dispersion significantly. With wind speeds greater than 8 m/s, the concentrations of PM10 and PM2.5 exceed beyond permissible limits up to 1 km radius. Variation in release height from 1 to 3 m does not have significant effect on particle dispersion. Change in atmospheric temperature and atmospheric humidity has no influence on dispersion of particles. The model results are validated with the field data obtained during the actual handling of coal at Mormugao Port Trust., QC 20211116

Historical archaeology may be characterized by an intricate relationship between, written sources and material remains. In research focusing on wrecks, this often results in descriptions of the events associated with one particular ship. These are narratives written from a historical horizon, where written sources provide the explanation to material remains. The aim of this paper is to show that a combination of material remains and written sources may be used as a departure point for a discussion on social conditions on board merchant ships in a more general sense. The case used is the fluit Anna Maria, launched in 1694 and which foundered in Dalarö harbour in 1709. The site is ideal for such a study, as it has been surveyed archaeologically on several occasions since the 1960s at the latest in all of 2010, and partly because historical research into the written accounts have been made. Taken together the material gathered enables a unique opportunity to reconstruct and to study the everyday environment on board a large fluitship.