Assertion: brattice | /r/HasProperty | avoided
Facets:
Source sentences:
text: Hence, fortified as this process is by the practice of the most eminent mining engineers, it cannot be wondered at that it is so general; nay, more, there are instances in which two separate shafts are sunk and finished upon distinct royalties, by different proprietors, and in which, as in the cases of Seaton and Seaham, near Sunderland (both now in the possession of the Marchioness of Londonderry), the brattice Is preserved as an essential of ventilation when it might be avoided, and distinct shafts of moat capacious area made available for the downcast and upcast of these extensive mines.