Usage of "principal tunnel"

Adit which is the central axis of access to a mine.

Synonyms

Examples for "main drift"

But it was a different matter in the main drift of her work. 
 George Eliot; a Critical Study of Her Life, Writings and Philoso... 

There were some eddies and counter currents to the main drift of affairs. 
 The Life of Abraham Lincoln 

Such a story tempts the allegorist, and indeed the main drift of its meaning is unmistakable. 
 Among Famous Books 

But the main drift here is discernible. 
 Expositions of Holy Scripture: Isaiah and Jeremiah 

Whatever may be thought of the arguments of 'Quo vadis?- aCensureof Travel,' its main drift is clear enough. 
 Plays and Puritans 

One day, in 1814, the main gallery of the colliery caught fire. 
 Biographies of Working Men 

Coming to the main gallery they found this deserted as well. 
 Return of the Crimson Guard 

Now she has reshaped the show for the RHA's cavernous main gallery space. 
 The Irish Times 

The RHA's capacious main gallery is given over to her formidable treatments of each. 
 The Irish Times 

They left the hallway and returned to the main gallery. 
 The lies of locke lamora 

Meanings of principal tunnel in English