placer

A New Placer Drilling Method & the Center Sample Recovery Method

砂矿钻探新方法&中心取样（CSR）钻探法

The Study on the New Method for Exploiting Deep Beach Placer

滨海砂矿开采新方法的研究

Discussion on the detection of mineral processing process of placer gold

砂金选矿工艺检测探讨

Study on new technology for concentration of raw material from deep beach placer

潜水层以下海滨砂矿毛矿精选新工艺研究

Study on automatic control of mining and mineral processing for beach placer

海滨砂矿采选工艺自动控制的研究

An approach to the calculation method of gold placer reserves

砂金矿储量计算方法的研讨

Potential distribution of placer deposits along the coast of Shandong Province

山东沿岸海滨砂矿的可能分布

The Development and Elemental Clinical Application of Intrauterine Device Placer

宫内节育器放置器的研制及其初步临床应用

Study on the rough concentration process for the residual ILMENITE PLACER

残坡积型钛铁矿砂矿粗选工艺的研究

About Environmental Protection in Gold Placer Mining Design

砂金矿开采设计中的环保问题

Drilling is an important means in prospecting placer deposits there .

钻探是苏联勘探砂矿矿床的一种有效手段。

Mine samples to placer gold separation and calculation of recovery

砂金选矿取样及回收率计算

Site investigation drill and placer exploration drill have much in common .

工程勘察钻机和砂矿钻机之间具有许多共同之处。

A drilling technique applied to the exploration of placer deposits

砂矿钻探技术

On ways to reduce placer gold loss in mining and dressing processes

采选工艺过程中减少砂金流失途径的探讨

The strategic study of exploitation of placer tin ore resources in Hunan Province

湖南省砂锡矿资源开发战略研究

Discussion on placer gold mining methods in permafrost area

关于永久冻结砂金矿开采方法的探讨

The Origin of Placer Gold : A Two-stage Genetic Model

砂金矿成因：两次成矿模式

Remote Sensing geological analysis for placer gold in basin of Han Jiang river

汉江流域砂金控矿遥感地质分析

Quality Control and Error of the Estimated Ore Reserves for Placer Gold Deposit Drilling

砂金矿钻探质量检查及其储量误差

Double pipe hammering with inside pipe sampling technology and operation for placer drilling

砂钻的双管冲击内管取心工艺

On characteristics of grain size of placer gold

砂金粒度特性研究

The coefficient of dissolution can indicate the source of placer gold .

溶蚀系数可指示砂金是近或远原生源金矿。

And ( 3 ) the Quaternary placer gold metallogenic system .

第四纪砂金成矿系统。

Research on Placer Gold Mining under Paddy Field-the Technology of Biological Field Recovery

稻田砂金开采生物复田技术研究

Study on the nwe technology for the cleaning of beach placer

海滨砂矿精选新工艺的研究

Classification and characteristics of the coastal and offshore placer deposits in Shandong

山东省近海砂矿分类及其基本特征

Technical Achievements in Placer Drilling and Future Trend

我公司砂矿钻探技术进展与今后的方向

Types of the Marine Placer Deposits in China

论中国海洋砂矿床类型

Trial Drilling Results of YKS-30 Model Air Counter Circulation Placer Drill

YKS&30型空气反循环砂钻的初步试验获得可喜进展