DRILLING METHODS Sample Clauses

DRILLING METHODS. Atna’s program utilized both reverse circulation (RC) and diamond core drilling (DDH) methods. Reverse circulation drilling was used primarily as pre-collars for diamond core tails. This was done to minimize costs in the barren material above the mineralized fault zones. Diamond drilling was utilized to provide better confidence in sample quality than can be expected from RC drilling methods, as well as to provide for rock quality calculations and better geologic definition of the structurally controlled ore zones for engineering and modeling purposes. The distribution of reverse circulation versus core holes is discussed in Section 17.3 of this report. Table 11-2: Summary of Atna Resources Phase I Drilling
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DRILLING METHODS. All borings shall be drilled by a method of the Contractor’s choosing unless otherwise specified under the Site Specific Section of the Scope of Service. The method(s) shall be proposed by the Contractor and approved by the COR prior to use. The method(s) shall be discussed in the Contractor work plans. The drilling method must allow, or provisions must be made for, accurate determination of the depth to ground-water surface. If a well is to be installed in a boring, the boring shall be of sufficient diameter to permit at least two inches of annular space between the boring wall and the sides of the centered riser and screen. The boring diameter shall be of sufficient size to allow for the accurate placement of the screen, riser, centralizers, filter pack, bentonite, and grout. The Contractor’s drilling method shall maintain the integrity of the borehole (i.e. prevent collapse) during backfilling or well installation. No grease shall be used on drill pipe joints. The use of any lubricants shall be submitted for approval in the Contractor work plans and shall be noted on the boring logs. The Contractor shall provide documentation (brand name, chemical analysis of product composition, SDS, etc.) to the COR for all materials introduced into the boring during drilling, for approval prior to use.
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DRILLING METHODS. Any exploration well which the Contractor becomes obligated to drill under this paragraph 1 of Article VI shall be drilled in accordance with generally accepted methods used in the international CBM industry and shall be deemed drilled upon the first to occur of the following: a) it reaches the projected depth; b) it becomes a Discovery Well; c) it reaches basement rock; or d) it encounters impenetrable substance or excessive geothermal gradients.
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Related to DRILLING METHODS

  • Billing Method 2.6.1 To receive payment for services rendered pursuant to this contract the Contractor shall submit a fully completed invoice for work previously performed to: 2.6.2 At a minimum, the invoice shall detail the following information: 2.6.2.1 Unique invoice number; 2.6.2.2 Contractor’s name, address, and telephone number; 2.6.2.3 Date of invoice and/or billing period; 2.6.2.4 Applicable Contract No.;

  • Construction Methods 3.1 The Contractor shall provide all tools, equipment, materials, labor and work for the excavation and removal of the unsuitable subgrade soils and their subsequent replacement with the specified backfill soils as directed by the Owner’s representative. All work under this item shall be performed in a safe and workmanlike manner. 3.2 All work shall be performed in accordance with DelDOT Standard Specifications Section 821. 3.3 Following the removal of existing pavements, the Owner’s representative will review the exposed subgrade and provide recommendations for the undercutting of unsuitable subgrade materials as required. The depth and extent of undercut excavation, if required, will be determined by the Owner’s representative at the time of excavation. 3.4 All excavated materials shall become the property of the Contractor and be removed from the site at the completion of the project at no additional expense to the Owner. 3.5 Undercut excavations should be backfilled with graded aggregate. Backfill shall be placed in loose lifts not exceeding 8 inches thick. Each lift should be compacted with at least 3 passes of a minimum 5-ton, walk-behind or self-propelled vibratory roller when the size of the area permits, or with a vibrating plate mechanical compactor for smaller areas. Lift thickness shall be reduced to 6 inch loose lift when using a vibratory plate compactor. 3.6 The Contractor shall take precautions as necessary to minimize the potential for disturbance or softening of the pavement subgrade materials from inclement weather or construction traffic. As a minimum, this shall include the placement of backfill on the same day as the excavation. Any soft areas which develop shall be undercut and replaced with graded aggregate at no additional cost to the Owner. 3.7 Where undercutting is performed, the geotextile fabric shall be installed. The fabric should be pulled tight and lapped a minimum of 12 inches.

  • Accounting Methods Implement or adopt any change in its accounting principles, practices or methods, other than as may be required by generally accepted accounting principles.

  • Network Interconnection Methods 3.1 The Interconnection provided herein may not be used solely for the purpose of originating a Party’s own interexchange traffic.

  • Accounting Method For both financial and tax reporting purposes, the books and records of the Company shall be kept on the accrual method of accounting applied in a consistent manner and shall reflect all Company transactions and be appropriate and adequate for the Company’s business.