A wall of separation in a shaft or gallery used for ventilation.
Planking to support a roof or wall.
1) A wooden tower; 2) A temporary breastwork or parapet put up during a siege (Hording) Projection to allow the defense of the base of a building.
a term applied either to the main divisions of the shaft or to the parhal slit dealing placed in the working-places to guide the current of air up to the face of the workings.
A division created in a mine shaft or tunnel which is used to control or direct the airflow in the mine. One side of the brattice would be the air flow intake and the other, the return
(also known as Hoarding) Haut Koenigsbourg, France ( Le Chateau du Haut Koenigsbourg: notre Demarche) A projecting, roofed timber tower sometimes on the top of a tower or wall. It was used to cover blind spots at the base of the walls. It had holes in the floor through which the defenders could watch and fire on attackers. They later evolved into stone machicolations.
Temporary wooden gallery for use in a siege.
Timber tower or projecting wooden gallery; hoarding.
a partition (often temporary) of planks or cloth that is used to control ventilation in a mine
supply with a brattice, to ventilate mines
A board of plank lining, or other partition, in any mine passage to confine the air and force it into the working places. Its object is to keep the intake air from finding its way by a short route into the return airway.
Wooden frames down the centre of a tunnel covered with thick canvass for ventilation
Fire-resistant fabric or plastic partition used in a mine passage to confine the air and force it into the working place. Also termed "line brattice," "line canvas," or "line curtain."
A wooden tower or a projecting wooden gallery at the top of a wall
A temporary wooden parapet or gallery erected on the battlements of a fortress and used during a siege. They work like machicolations (holes in the floor to drop nasty things on attackers) to cover blind spots on the walls.
A brattice is a partition used in mining. It is built between columns of a sub-surface mine to direct air for ventilation. Depending on the type of mine and how the operation is run, brattices can be permanent (concrete block, tailings, or wood) or temporary (cloth).