Put the orange slices into a durable bowl and add the lemon juice and the pinch of salt. Use a wooden spoon to "bruise
" the orange slices so that the oil in the peels emerges and the pulp from the orange mixes with the lemon juice
. Add the vodka
and continue to stir. Add the orange juice
and combine well.
Divide the ice among 8 glasses and pour in the drink mixture. Serve immediately.