This article is over 5 years old and may contain outdated information.

People & Culture

Bell Island expedition hit with underwater emergency

'Our dive went well until our decompression stop when Cas tore a mouthpiece and experienced what we call a caustic cocktail.' – Jill Heinerth writes update on RCGS expedition

  • Feb 18, 2016
  • 593 words
  • 3 minutes
Photo: Jill Heinerth
Diving in the mine tunnels beneath Bell Island, Newfoundland. (Photo: Jill Heinerth)
Expand Image
Advertisement

The Bell Island, Newfoundland Minequest has been named The Royal Canadian Geographical Society‘s Expedition of the Year. It is one of seven expeditions that have received funding from the RCGS in 2016. Watch CanGeo Daily and follow the RCGS on Twitter for updates from all of this year’s exciting expeditions.

Read Jill Heinerth’s earlier dispatches from Bell Island.

Today we arrived at the mine to discover a major river running down the slope. With the intense rain and snowmelt on the island, all the water had to go somewhere. When we walked down to the dive staging area we were shocked to discover that we had lost more than 20 feet of waterfront. The dock was close to the ceiling and the benches and staging area were submerging. It was simply not safe to use our walkways and dock.

Not to be discouraged, the skeleton team jumped into action. Volunteers were unable to make it across The Tickle on the ferry, so we were a little short handed. All hands moved tanks, tables and gear and deconstructed the lighting system and rest of the infrastructure. Repairs will need to be made when the water level drops. The water came up six feet through the day. With a hard freeze tonight, we are hoping the inflow subsides.

Expand Image
The flooded dock. (Photo: Sabine Kerkau)

The rushing water also destroyed visibility for a significant distance. Cas Dobbin and I entered the water in another column and groped through 250 feet of zero-visibility muck. When we finally emerged from the clay colored water, we could see white misty in-feeding seeps further polluting the visibility. We made our way down to 130 feet of depth and spent some time shooting equipment near the pumping station. We found a lot more interesting graffiti and even managed to identify one of the people named on the wall. His friends were assisting at the mine and told us about his prowess playing strongman on their hockey team.

Cas and I were the only ones eager to make a second dive. We worked on a video mission and searched for the best area to lay line the following day. The visibility seemed to be best on the east of our entry, as far away as possible from the in-feeding meltwater.

Our dive went well until our decompression stop when Cas tore a mouthpiece and experienced what we call a caustic cocktail. Water leaked into his rebreather and mixed with the carbon dioxide absorbent material, creating an alkaline fluid that can burn the mouth. We were in inches of visibility when he quickly switched off his loop and got on open circuit air. He coughed and I reached out to hold him. The scuba air was the same temperature as the water at 3 degrees, so he became quickly chilled. Rebreathers create an exothermic reaction that gives a diver warm moist air to breathe. Traditional scuba is like inhaling freezing air, chilling the diver more quickly. Cas handled the emergency like a really well practiced explorer and managed through the chill to complete his full decompression obligation.

After the dive, we jumped right into our medical tests and learned many more new things about decompression stress. I’ll leave the details for a future post, but suffice to say, the medical research being done here is incredibly valuable to the team and to understanding extreme dive profiles.

Advertisement

Are you passionate about Canadian geography?

You can support Canadian Geographic in 3 ways:

Related Content

People & Culture

Amet*: Understanding the Beothuk

*It means “awake” in Beothuk, the language and people who once called present-day Newfoundland home for about 2,000 years. One young woman, believed to be the last living Beothuk, left a collection of maps and art that help us understand her people’s story.

  • 3378 words
  • 14 minutes
Photo: Jill Heinerth

People & Culture

Divers to explore underwater mines beneath Newfoundland island

Jill Heinerth is leading a team of divers into the cold February waters to explore and document underwater mines at Newfoundland's Bell Island

  • 771 words
  • 4 minutes
bell island expedition

Exploration

Photos from beneath Bell Island, Newfoundland

Diver and photographer Jill Heinerth shares a glimpse into the summer phase of The Royal Canadian Geographical Society's Expedition of the Year

  • 722 words
  • 3 minutes

Exploration

The 2022 Expedition Insider

A behind-the-scenes look at the adventures and discoveries of the passionate explorers funded by the Royal Canadian Geographical Society

  • 3864 words
  • 16 minutes