Showing posts with label brine. Show all posts
Showing posts with label brine. Show all posts

Sunday, March 12, 2023

The salt of the Earth

There's a hill to the East of Pinoso. It's a rounded, dome like, formation which stands about 320 metres above the surrounding terrain though its summit is 890 metres above sea level. If you know Pinoso it's the hill with a couple of telecoms masts near it's summit and you can see it from almost everywhere in town. It's called Monte Cabeço and it's a sort of visual reference point for most Pinosoeros. Travelling home, with Spaniards, on a coach from Madrid years and years ago the man behind me tapped me on the shoulder when el Cabeço came into view, "Look," he said, "It's our mountain".

One of the wines produced by the local Pinoso Bodega is named for the hill, it's called Diapiro and diapiro is the Spanish equivalent of the technical word, diapir in English, to describe the geological phenomenon where the light, and plastic, salt has been squeezed up through the harder, surrounding rock.

The salt in Monte Cabeço has been mined for years, at least since Roman times. The hill is basically millions and millions of tons of Triassic salt. Salt in its mineral form is called halite. In the past the salt was mined by digging it out with picks and shovels but nowadays the salt is extracted by drilling a borehole, injecting pressurised water into the rock to dissolve the salt and then pumping out the resultant brine. The saltwater solution is sent down a 53 km gravity fed pipeline to Torrevieja. There the solution is added to the salt lagoons, already partially filled with salty water from the Mediterranean. The Pinoso brine increases the concentration of salt in the water so, as the hot sun evaporates the water from the shallow lagoons, it leaves behind tons and tons, 550,000 last year, of salt ready for the chemical industry, for road gritting, for any number of industrial uses and even to add a bit of taste to your food despite what the doctor told you.

Sunday, September 27, 2015

Absent minded

Today we took part in the day of the absent Pinosero. 

Pinoseros are people who were born in Pinoso. The idea of the day is that it celebrates the locals who, for one reason or another, no longer live here. Each year some of them make the journey back to Pinoso to meet with friends and family or just to renew acquaintance with the town. Those who will never come back are remembered too.

The day included an official welcome, a presentation about the local salt workings and then a trip, by coach, to the top of Cabezo to have a look the actual installations on the ground before travelling back to town for a quick church service, a group photo and a meal.

Pinoso mines salt, a lot of salt but there's not a mineshaft, pick or shovel to be seen. One of the local topographic features is a rounded, dome like, hill which stands about 320 metres above the general terrain and whose summit is at something like 890 metres above sea level at Alicante. It's a salt dome. Millions and millions of tons of Triassic salt that have squeezed up through the surrounding rocks. Nowadays a mining company injects water into the ground, dissolves out some of the salt and sends it down a 53km gravity fed pipeline to Torrevieja. There the brine is added to the salt lagoons, filled with already salty water from the Mediterranean. The Pinoso brine ups the concentration of salt in the water so, when the water is evaporated away, they are left with tons of salt ready for road gritting, the chemical industry and other industrial uses.

To be honest I've been to much more exciting salt workings where huge trucks work underground or where salty white miners work with picks and wooden wheelbarrows (well in front of tourists they do) but this was interesting because it was on home turf. Something that we'd not done either before.

The meal wasn't bad. Mass catering and a very normal sort of menu but the rabbit stew, the gazpacho, I had was good and Maggie said her rice, rabbit and snail paella, was good enough too. The company was excellent. We had gone with a couple of recently arrived Britons but otherwise we were, obviously enough, surrounded by Spaniards and they seemed more than happy to chat with us. There were a couple of quite impish chaps sitting opposite who must have been studying irony at the University of the Third Age and were  determined to try out some of the things they had learned.

So, about seven hours after we started we came home. Fatter and more knowledgeable about local geography, geology and industry and, rather surprisingly, grasping one of the group photos.