CA1041778A - Mining equipment - Google Patents

Info

Publication number

CA1041778A

CA1041778A CA253,117A CA253117A CA1041778A CA 1041778 A CA1041778 A CA 1041778A CA 253117 A CA253117 A CA 253117A CA 1041778 A CA1041778 A CA 1041778A

Authority

CA

Canada

Prior art keywords

roof support

support

advancing unit

advancing

cylinder

Prior art date

1975-05-22

Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Expired

Links

• Espacenet
• Global Dossier
• CIPO
• Discuss

• 238000005065 mining Methods 0.000 title description 4
• 239000012530 fluid Substances 0.000 claims description 3
• 229910052500 inorganic mineral Inorganic materials 0.000 description 9
• 239000011707 mineral Substances 0.000 description 9
• 206010061876 Obstruction Diseases 0.000 description 5
• WWYNJERNGUHSAO-XUDSTZEESA-N (+)-Norgestrel Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](CC)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 WWYNJERNGUHSAO-XUDSTZEESA-N 0.000 description 1
• 230000002411 adverse Effects 0.000 description 1
• 235000015115 caffè latte Nutrition 0.000 description 1
• 230000000875 corresponding effect Effects 0.000 description 1
• 230000000694 effects Effects 0.000 description 1
• VOVZXURTCKPRDQ-CQSZACIVSA-N n-[4-[chloro(difluoro)methoxy]phenyl]-6-[(3r)-3-hydroxypyrrolidin-1-yl]-5-(1h-pyrazol-5-yl)pyridine-3-carboxamide Chemical compound C1[C@H](O)CCN1C1=NC=C(C(=O)NC=2C=CC(OC(F)(F)Cl)=CC=2)C=C1C1=CC=NN1 VOVZXURTCKPRDQ-CQSZACIVSA-N 0.000 description 1
• 239000011435 rock Substances 0.000 description 1