One of my constituents fell into a cement mixer which had a faulty safety grille.
After 1980 the standard provision for all segregation cells is mechanically ventilated or natural ventilation through grilles.
Exhaust grilles lead spent air through ducts within the cross walls into heated plenums under roof and thence to turrets in towers and pavilions.
Exhaust was directly overhead through ceiling grilles into a continuous exhaust plenum that was relieved by a continuous ridge vent, manually controlled by an ingenious continuous butterfly valve or damper.
Through the late 1960s and into the 1970s, dance competitions became a regular feature at many grilles, which spurred dancers to further refine their moves and to invent new steps.
The aguelulos were held in private family houses, but also spread to larger spaces such as grilles, which would open their doors for these afternoon events.
Spent air is exhausted through grilles overhead leading to a continuous ridge vent.
These are directly connected over a fixed baffle with exterior grilles that are hardly visible among the exterior masonry.
