 The building of the railway and pipeline had not been greatly affected by the fighting on 23 April and by 29 April , four trains a day were running regularly to the railhead , manned by No. 276 Railway Company , and the main line to Romani was opened on 19 May . A second standard gauge railway line from Romani to Mahamdiyah on the Mediterranean coast was completed by 9 June . But conditions on the ground were extreme ; after the middle of May and in particular from mid June to the end of July , the heat in the Sinai Desert ranged from extreme to fierce when temperatures could be expected to be in the region of 123 ° F ( 51 ° C ) in the shade . The terrible heat was not as bad as the Khamsin dust storms which blow once every 50 days for between a few hours and several days ; the air is turned into a haze of floating sand particles flung about by a strong , hot southerly wind . 
 The building of the railway and pipeline <a href='been_done' title='1'><mark>had</mark></a> not been greatly affected by the fighting on 23 April and by 29 April , four trains a day <a href='uninflect' title='2'><mark>were</mark></a> running regularly to the railhead , manned by No. 276 Railway Company , and the main line to Romani was opened on 19 May . A second standard gauge railway line from Romani to Mahamdiyah on the Mediterranean coast was completed by 9 June . But conditions on the ground <a href='uninflect' title='3'><mark>were</mark></a> extreme ; after the middle of May and in particular from mid June to the end of July , the heat in the Sinai Desert ranged from extreme to fierce when temperatures could be expected to be in the region of 123 ° F ( 51 ° C ) in the shade . The terrible heat <a href='negative_concord' title='4'><mark>was</mark></a> <a href='negative_concord' title='5'><mark>not</mark></a>as bad as the Khamsin dust storms which blow once every 50 days for between a few hours and several days ; the air is turned into a haze of floating sand particles flung about by a strong , hot southerly wind . 
Da building of tdarailway and pipeline done not been greatly affected by the fightin on 23 April and by 29 April , 4 trains a day was runnin regularly to thdaailhead , manned by No. 276 Railway Company , and thedain line to Romani was opened on 19 May . A second standard gauge railway line from Romani to Mahamdiyah on the Mediterranean coast was completed by 9 June . But conditions on the daund was extreme ; after the middle of May and in particular from mid June to the end of July , the heat in the Sinai Desert ranged from extreme to fierce when temperatures could be expected to be in the rdaon of 123 ° F ( 51 ° C ) in the shda . The terrible heat ain't as bad as the Khamsin dust storms which blow once every 50 dayz for between a few hrs and several days ; the air is turned into a haze of floating sand particles flung bout by a strong , hot southerly wind .