M. P. CHANDRAKANTARAJ URS, J.-- These four writ petitions are disposed of by the following common order as the grievances of the petitioner therein are identical and they have sought the same relief. The petitioner in W.P. No. 6979/1989 is M/s. V. M. Salgaocar and Brother Ltd., of Vasco de Gama Goa. The petitioner in W.P. No. 7166/1989 is M/s. Chowgule & Company Ltd., Mormugao Harbour, Goa. The petitioner in W.P. No. 7273/1989 is M/s. Sociedade de Fomento Industrial Ltd., Margao, Goa. The petitioner in W.P. No. 10636/1989 is M/s. V. S. Dempo & Company Ltd., Campal, Panaji, Goa.

2. All the petitioners are mine owners, mining among other things manganese and iron ores and they are also exporters of the ores to foreign countries mostly to Japan and Korea. It is alleged in the first of the petitions (I propose to go by the facts stated in that petition), that it entered into the agreement with the foreign buyer on credit price for iron and/or manganese ore and foreign buyers sent their ships either owned by them or chartered by them and the petitioners loaded their ore stacked at the berth at the port side by mechanical means into the vessel which carried the ore and sometimes it u