This sounds very much like "The Permanent Implosion" a short story by Dean McLaughlin. As in the question a wormhole has been opened, which in the story is called a "congruency", which is creating a gale by sucking the Earth's atmosphere into it. The oil capper, Mick Candido, tries various oil well techniques to deal with it, and eventually encloses the congruency within two metal hemispheres. The hemispheres did not fit together perfectly, so a trickle of air still escaped, but it was a tolerable level.

As the OP recalled the twist in the story was:

"I'm starting a new business," Candido said. "That's why I wanted this chunk of land. I'm going to sell vacuums, - the emptiest vacuums in the world. How much do you think they'll pay for a real gallon of nothing - no impurities?"

It can be read online in the February 1964 issue of Analog at the Luminist archive - complete with the cover illustration of the metal hemispheres.

This sounds very much like "The Permanent Implosion" a short story by Dean McLaughlin. As in the question a wormhole has been opened, which in the story is called a "congruency", which is creating a gale by sucking the Earth's atmosphere into it. The oil capper, Mick Candido, tries various oil well techniques to deal with it, and eventually encloses the congruency within two metal hemispheres. The hemispheres did not fit together perfectly, so a trickle of air still escaped, but it was a tolerable level.

As the OP recalled the twist in the story was:

"I'm starting a new business," Candido said. "That's why I wanted this chunk of land. I'm going to sell vacuums, - the emptiest vacuums in the world. How much do you think they'll pay for a real gallon of nothing - no impurities?"

It can be read online in the February 1964 issue of Analog at the Luminist archive - complete with the cover illustration of the metal hemispheres.

This sounds very much like "The Permanent Implosion" a short story by Dean McLaughlin. As in the question a wormhole has been opened, which in the story is called a "congruency", which is creating a gale by sucking the Earth's atmosphere into it. The oil capper, Mick Candido, tries various oil well techniques to deal with it, and eventually encloses the congruency within two metal hemispheres. The hemispheres did not fit together perfectly, so a trickle of air still escaped, but it was a tolerable level.

As the OP recalled the twist in the story was:

"I'm starting a new business," Candido said. "That's why I wanted this chunk of land. I'm going to sell vacuums, - the emptiest vacuums in the world. How much do you think they'll pay for a real gallon of nothing - no impurities?"

This sounds very much like "The Permanent Implosion" a short story by Dean McLaughlin. As in the question a wormhole has been opened, which in the story is called a "congruency", which is creating a gale by sucking the Earth's atmosphere into it. The oil capper, Mick Candido, tries various oil well techniques to deal with it, and eventually encloses the congruency within two metal hemispheres. The hemispheres did not fit together perfectly, so a trickle of air still escaped, but it was a tolerable level.

As the OP recalled the twist in the story was:

"I'm starting a new business," Candido said. "That's why I wanted this chunk of land. I'm going to sell vacuums, - the emptiest vacuums in the world. How much do you think they'll pay for a real gallon of nothing - no impurities?"

It can be read online in the February 1964 issue of Analog at the Luminist archive - complete with the cover illustration of the metal hemispheres.