TON adds DR410i rotary blast hole drill to its

2020-6-22  The DR410i can complete 152 mm to 251 mm rotary and DTH (down-the-hole) holes, with a standard mast and offers a first pass capability of 10 metres with a maximum hole depth of 46.6 metres.

Rotary Blast Hole Drills Drilling Rig Manufacturers

Rotary Drilling Series. Diameter : 9” (229mm) to 11” (279mm) Single pass Depth : 35 ft (10.6m) & 55 ft (16.7m) Multi pass Depth : 175 ft (53m) & 220 ft (67m) Application : Mining. The REL C750 Rotary Blast Hole Drill Machines is designed to drill holes ranging from 9 inches (229mm) to 11 inches (279mm).

BlastHole Drilling Introduction Hardrockdrills

2019-6-4  The drilling principle is to use a high pull down force (weight-on-bit), rotate the drill bit, and blow the rock cuttings to the surface with compressed air. Hardrock drills typically use the Rotary

TON D45KS DTH Blasthole Drill for Coal, Gold and

Our TON D45KS blasthole drill is ideal for coal, gold and iron ore mining. It drills holes with a diameter of 152 229 millimeters (6 9 inches) down to a maximum depth of up to 63 meters (208 feet). This blasthole drill rig offers easy maintenance and repairs for

PRODUCTION DRILLING Capital Drilling

2019-3-12  BLAST HOLE DRILLING SERVICES. Blast hole drilling requires considerable skill and technical competence . to ensure accurate holes that achieve an optimal distribution of explosive . energy. An effective blast delivers finer ore fragmentation, higher waste mining productivity and minimal down-stream costs and provides a material financial

Rotary Drilling Rig & Down the Hole Drill Machine for

Down the Hole Drills C625H. The C625H Jack-less blast hole drill is capable of drilling clean hole of diameter of 4-1/2 inch (114.3mm) to 8 inch (203.2mm). The sturdy mast of the C625H delivers a single pass depth of 19.68 ft (6m) and maximum depth of 118 ft (36m). Learn More

Rotary Blasthole Drills for All Mining Applications

TON DR412i blasthole drill is designed to deliver dependable penetration and return on investment for 216-311 mm (8.5-12.25 in) rotary and DTH holes, with a first pass capability of 18.3 m or 60 ft and a maximum depth of 33.5 m or 110 ft for the single

Our Services Action Drill & Blast

2021-5-8  Down The Hole Service; Load, Stem & Initiate / Blast; Our Projects; People & Careers Rotary drilling up to depths of 84m; Production and pre-split holes; Lithium; Iron ore; Gold; Base metals; Typical Client Works. Open cut metalliferous ore mining; Waste removal; Pit development, pre-splits, smooth wall blasting, box cuts; Capabilities

MINING OzLand

76mm 311mm Drill hole capacity using Top hole hammer, Down hole hammer and Rotary drilling techniques. Inpit grade control capability with crawler mounted drills to depths of 50 metres. Tele remote drilling to allow safe access over void ground and under dangerous highwalls; High pressure and low-pressure rigs for specialised blast hole

Practical Aspects of Blast Hole Drilling

2018-11-14  In these series article, we will introduce the key knowledge on blast drilling according to our many years practical experience in Hardrock Drills. Below is the lecture overview which will be introduced item by item, today we will start from Modern systems for surface blasting drilling. Lecture Overview Modern systems for surface blasting drilling Blast

Performance analysis of rotary blast-hole drills

2020-12-1  As the drilling progresses down the hole, cuttings generated are removed through the passage between the drill rod and blast-hole wall by pneumatic flushing, ensuring proper penetration of bit into the rock. During the process of removal of drill cuttings, the

Rotary Blasthole Drills for All Mining Applications

TON DR412i blasthole drill is designed to deliver dependable penetration and return on investment for 216-311 mm (8.5-12.25 in) rotary and DTH holes, with a first pass capability of 18.3 m or 60 ft and a maximum depth of 33.5 m or 110 ft for the single pass mast. The multi pass mast delivers a first pass depth of 12 m or 39.5 ft with a maximum depth of 76 m or 245 ft across all recommended

THE HISTORY OF DOWN-THE-HOLE DRILLING AND THE

Down-the-hole drilling has been a feature of dam anchoring and rock mass grouting in the U.S. for many decades. Until quite recently, this rotary percussive drilling method was synonymous with the use of compressed air. Within the last decade, however, increasing use has been made of water-activated, down-the-hole hammers. These provide

Caterpillar launches new rotary blasthole drill

2017-7-18  A 42.2 m 3 /min @ 34.4 bar (500 psi) compressor is available for DTH drilling, while rotary drilling compressor choices include units offering 56.6 m 3 /min @ 8.6 bar (125 psi) or 73.6 m 3 /min

TON DR416i Rotary Blasthole Drill for Hard Rock

TON DR416i blasthole drill delivers a single-pass capacity of 21m (69ft), the longest single-pass mast in its class along with a maximum depth of 42.4 m (139 ft) across all recommended pipe diameters. Intended for large-diameter rotary drilling, (270–406 mm/10 5/8 –16 in) TON DR416i combines power and intelligence, taking the guesswork out of daily operation and delivering a

2007:179 CIV MASTER'S THESIS DiVA portal

2016-10-4  Liu and Karen (2001) studied the internal relation between drill performance parameters in rotary drilling. Data from blast hole drilling in Minntac iron ore mine in America were examined. They introduced two new quantities, specific surface energy and stress ratio as indicators of rock drillability.

Mining Services / Services / Capital Capital Drilling

Blast Hole Drilling. Our blast hole drilling teams focus on outstanding delivery: competent crews provide accurate drill holes, eliminating expensive and time consuming re-drills and gear lost in ground; flexible capacity ensures we can adjust productivity to meet the needs of the mill; and excellent relationships with our local crews provide a stable, long-term workforce.

MINING OzLand

76mm 311mm Drill hole capacity using Top hole hammer, Down hole hammer and Rotary drilling techniques. Inpit grade control capability with crawler mounted drills to depths of 50 metres. Tele remote drilling to allow safe access over void ground and under dangerous highwalls; High pressure and low-pressure rigs for specialised blast hole

BEST PRACTICES IN DRILL AND BLAST IQPC Corporate

2017-5-9  Gold ore fi nes: • Are prone to free fi ne gold losses through inadvertent washing by water and; • Can impede leaching operations. LOAD DRILL & BLAST HAUL DUMP CRUSH • Fragmentation • Dig rates • Equipment down-time • Maintanace costs • Throughput • Maintanance • Equipment productivity 2-5: Post blast activities

Five Things You Didn't Know About Drilling

D rilling is the process of creating a hole in a hard surface, specifically where the length of the hole is greater than its diameter. It’s an integral part of the mining process, albeit less dramatic than, say, blasting. If you’re curious to know why mining couldn’t exist without this essential process, read on to discover five things that you may not know about drilling.