| The two southernmost glory holes are large vertical features on the landscape and appear to be stopes opened to the surface. |
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| As a result of this practice immense stopes, or cavities, connected by narrow drives had been formed. |
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| We explored the areas that were not being mined, including miles of old abandoned drifts and stopes. |
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| Dunham noted that fluorite was more common in stopes developed on veins lower down in the Melmerby Scar Limestone than in the upper flats. |
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| For the next ten years it was leased to tributors who worked the old stopes of the conglomerate lode above the adit level. |
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| This meant we had to carry heavy battery-powered lights into the old stopes. |
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| The remnant ore inside the old stopes, pillars and tailings used as backfilling are being leached with mild acid solution. |
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| By this time the mine had three shafts, many large stopes and hundreds of metres of drives. |
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| Open stopes extending upward to grass roots are not uncommon in the area, and hikers and tourists should take note of this danger. |
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| Several pockets up to 1.3 meters and containing calcite crystals were exposed in the walls of the stopes. |
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| Another major development was an underground ore handling system for the drill, extraction and trucking levels associated with the stopes. |
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| Crystallized copper could still be found in the mined-out stopes, but we didn't find any datolite. |
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| Company geologists regularly visit stopes and development headings to gather samples, map local geology, and give direction to miners. |
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| Cement bulkheads, which act as plugs, seal the openings to these chambers and stopes. |
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| This arsenic trioxide dust is currently stored in 15 underground chambers and stopes at Giant Mine. |
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| The new owners gave an extended lease of life to the mine by extracting ore from the footwall zone of the old stopes that were thought to have been mined out. |
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| Chalcanthite was noted in several locations within the mine on this tour, with thick encrustations of bladed crystals in many of the older drifts and stopes. |
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| Stoping, in mining engineering, the opening of large underground rooms, or stopes, by the excavation of ore. |
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| There are numerous open stopes and interconnected, short, meandering, near-surface underground workings that are in varying degrees of collapse and very dangerous. |
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| Approximately 1.75 Mt of salt waste from the potash operation and rock salt screen rejects are sent directly to active cut-and-fill potash stopes to be used as backfill. |
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| When the decision was made to store the arsenic trioxide in the chambers underground, it was considered to be the safest place because the chambers and stopes were within the permafrost zone. |
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| Where the length of a sublevel is approximately 70 metres from its extremity to the central access cross cut, it is divided into two stopes, with the second stope mined after backfilling the first stope. |
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| In many mining operations, stopes must be supported artificially. |
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| A super-cooled liquid will be circulated through a series of underground pipes to freeze the designated areas around and within each of the chambers and stopes. |
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| It was believed that when the time came to close Giant Mine, permafrost would reform around the storage chambers and stopes, and seal in the arsenic trioxide. |
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| Site investigation and assessment: collection of additional baseline data for the site and geotechnical investigations of the chambers and stopes containing arsenic trioxide. |
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| The freezing will be accomplished by first installing pipes below and around the chambers and stopes, and then pumping a coolant through the pipes. |
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| The presence of faults and joint structures in stope walls within the ore body has resulted in overbreak of ore into adjacent stopes. |
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| All of the arsenic trioxide management alternatives would require ongoing water treatment and monitoring, including those options that would take the arsenic trioxide out of the stopes and chambers. |
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| The arsenic trioxide dust that is in the stopes and chambers would be contained in frozen blocks, but a smaller amount remains distributed throughout the other underground mine workings. |
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| In 1921 Stopes founded the Society for Constructive Birth Control which led the way for the later family-planning clinics. |
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| The Marie Stopes private abortion clinic is scheduled to open next week in Belfast. |
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| Born in 1924, Harry was the only child of the famous women's rights campaigner Marie Stopes. |
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| In early August, London-based pro-abortion group Marie Stopes International opened an abortion mill in Kabul, reported the Cybercast News Service. |
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| Throughout the 1920s, Stopes and other feminist pioneers, including Dora Russell and Stella Browne, played a major role in breaking down taboos about sex. |
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